REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Showing posts with label BUSH. Show all posts
Showing posts with label BUSH. Show all posts

Wednesday, 11 December 2019

BUSH BTV17, GOODMANS GTV371VCR, ORION CTV, SHAREWOOD AX4050R - SERVICE MODE ADJUSTMENTS AND SCHEMATIC - STR G6653 BASED SMPS



To enter SERVICE MODE, unplug AC cord till lost actual clock time. Then press and hold Vol (-) button of main unit and remocon key simultaneously.
The both pressing of set key and remote control key will not be possible if clock has been set. 
To reset clock, either unplug AC cord and allow at least 30 minutes before Power On or alternatively, discharge backup capacitor.
CONFIRMATION OF USING HOURS.
POWER ON total hours and PLAY/REC total hours can be checked on the screen.
Total hours are displayed in 16 system of notation.
NOTE: The confirmation of using hours will not be possible if clock has been set. To reset clock, either unplug AC cord and allow at least 30 minutes before Power On or alternatively, discharge backup capacitor.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and the Channel button (6) on the remote control simultaneously.
After the confirmation of using hours, turn off the power.
[(16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)]
On-Screen Display Adjustment.
Unplug the AC plug for more than 30 minutes to set the clock to the non-setting state. Then, set the volume level to minimum.
Press the VOL. DOWN button on the set and the channel button (9) on the remote control simultaneously to display adjustment mode on the screen.
Use the channel buttons (1-8) on the remote control to select the options.
Press the channel button (0) on the remote control to end the adjustments.
VCR SECTION PG SHIFTER.
Connect CH-1 on the oscilloscope to TP4001 and CH-2 to TP4501.
Playback the alignment tape. (JG001C)
Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center.
Press the VOL. DOWN button on the set and the channel button (3) on the remote control simultaneously until the indicator REC disappears. 
If the indicator REC disappears, adjustment is completed.
(If the above adjustments doesn't work well go with this procedure.)
Press the VOL. DOWN button on the set and the channel button (3) on the remote control simultaneously until the indicator REC disappears.
When the REC indicator is blinking, press both VOL. DOWN button on the set and the channel button (4) on the remote control simultaneously and adjust the Tracking +/- button until the arising to the down of Head Switching Pulse becomes 6.5 +/-- 0.5H.
Press the Tracking Auto button.
RF AGC DELAY.
Receive the monoscope pattern.
Connect the digital voltmeter between the pin 5 of CP603 and the pin 1 (GND) of CP603.
Activate the adjustment mode display of  and press the channel button (5) on the remote control.
The appears on the display.
Press the channel button (1) on the remote control to select "RF AGC DELAY".
Press the VOL. UP/DOWN button on the remote control until the digital voltmeter is 2.50 +/-- 0.05V (80dB).
VCO FREERUN.
Connect the oscillator to pin 11 of TU601.
Connect the digital voltmeter to pin 47 of IC601.
Adjust the L608 until the digital voltmeter is 3.6 +/-- 0.05V.
(TV SECTION) CONSTANT VOLTAGE (AC)
Using the remote control, set the brightness and contrast to normal position.
Connect the digital voltmeter to TP401.
Set condition is AV MODE without signal.
Adjust the VR502 until the DC voltage is DC 130 +/-- 0.5V.
CONSTANT VOLTAGE (DC).
Using the remote control, set the brightness and contrast to normal position.
Connect the digital voltmeter to TP401.
Set condition is AV MODE without signal.
Adjust the VR501 until the DC voltage is DC 130 +/-- 0.5V.
CUT OFF.
Place the set with Aging Test for more than 15 minutes.
Set condition is AV MODE without signal.
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode display  and press the channel button (5) on the remote control.
The settings appears on the display.
Press the channel button (5) on the remote control to select "CUT OFF".
Adjust the Screen Volume until a dim raster is obtained.
FOCUS.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast to normal position.
Turn the Focus Volume fully counterclockwise once.
Adjust the Focus Volume until picture is distinct. This adjustment is the same for all CRT TVs, irrespective of it's brand and screen size.
WHITE BALANCE.
NOTE: Adjust after performing CUT OFF adjustments before this adjustment.
Place the set with Aging Test for more than 15 minutes.
Receive the white 100% signal from the Pattern Generator.
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display and press the channel button (2) on the remote control to select "AKB".  
Press the channel button (2) on the remote control to select the "R.BIAS".
Using the SET +/- keys on the remote control, adjust the R.BIAS.
Press the CH. UP/DOWN button on the remote control to select the "G.BIAS", "B.BIAS", "R.DRIVE" or "B.DRIVE".
Using the SET +/- keys on the remote control, adjust the G.BIAS, B.BIAS, R.DRIVE or B.DRIVE.
Perform the above adjustment 7 and 8 until the white color is looked like a white.
SUB BRIGHTNESS.
Receive the monoscope pattern. (RF Input)
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode display and press the channel button (4) on the remote control.
Press the channel button (1) on the remote control to select "BRIGHT".
Press the VOL. UP/DOWN button on the remote control until the white 25% is starting to be visible.
Receive the monoscope pattern. (Audio Video Input).
Press the AV button on the remote control to set to the AV mode. Then perform the above adjustments 2~5.
SUB COLOR.
Receive the color bar pattern. (RF Input)
Connect the synchro scope to TP801.
Using the remote control, set the brightness, contrast and color to normal position.
Activate the adjustment mode display and press the channel button (4) on the remote control.
Press the channel button (3) on the remote control to select "COLOR".
Adjust the VOLTS RANGE VARIABLE knob of the oscilloscope until the range between white 100% and 0% is set to 4 divisions on the screen of the oscilloscope.
Press the VOL. UP/DOWN button on the remote control until the red level is set to the 4 divisions.
Receive the rainbow pattern. (Audio Video Input)
Press the AV button on the remote control to set to the AV mode. Then perform the above adjustments 2~7.
HORIZONTAL PHASE.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode display and press the channel button (1) on the remote control.
Press the channel button (1) on the remote control to select "H. PHASE".
Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum.
VERTICAL SIZE.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode display and press the channel button (1) on the remote control.
Press the channel button (3) on the remote control to select "V. SIZE".
Press the VOL. UP/DOWN button on the remote control until the horizontal over scan is equal to the vertical over scan.
VERTICAL LINEARITY.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode display and press the channel button (1) on the remote control.
Press the channel button (5) on the remote control to select "V. LIN".
Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on upside and downside becomes minimum.
VERTICAL POSITION.
Receive the monoscope pattern.
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode and press the channel button (1) on the remote control.
Press the channel button (4) on the remote control to select "V. POSI".
Press the VOL. UP/DOWN button on the remote control until the horizontal line of the monoscope comes to approximate center of the CRT.
OSD HORIZONTAL.
Receive monoscope pattern.
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode display  and press the channel button (5) on the remote control.
Press the channel button (4) on the remote control to select "OSD H".
Press the VOL. UP/DOWN button on the remote control until the difference of A and B becomes minimum.
VERTICAL LINEARITY 60 (AV).
Receive the monoscope pattern (Audio Video Input).
Using the remote control, set the brightness and contrast to normal position.
Activate the adjustment mode display and press the channel button (1) on the remote control.
Press the channel button (5) on the remote control to select "V. LIN".
Press the VOL. UP/DOWN button on the remote control until the horizontal line of the color bar comes to approximate center of the CRT.
Schematic- TV Power [SMPS] – STR-F6707 based.
Schematic – Deflection.
Schematic-chroma LA76812.
SYSCON SCHEMATIC.
TV power – STRG6653 based.
Interconnection diagram.
REPLACING THE MEMORY IC.
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE below.
Enter DATA SET mode by setting VOLUME to minimum.
While holding down VOLUME button on front cabinet, press key 6 on remote control simultaneously.
ADDRESS and DATA should appear as FIG below.
ADDRESS is now selected and should "blink". Using the SET + or - keys on the remote, step through the
ADDRESS until required ADDRESS to be changed is reached.
Press ENTER to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using SET + or - until required DATA value has been selected.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
Repeat steps 3 to 6 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
The unit will now have the correct DATA for the new MEMORY IC.
Posted By: FRANK at 06:05
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Monday, 25 March 2019

ORION _ BUSH _ GRUNDIG _ MATSUI _ DECCA _ TATUNG - TVs _ CHASSIS PRO 4400 _ SERVICE INFORMATION & SCHEMATIC DIAGRAM

ORION _ BUSH _ GRUNDIG _ MATSUI _ DECCA _ TATUNG - TVs _ CHASSIS PRO 4400 _ SERVICE INFORMATION & SCHEMATIC DIAGRAM






BUSH 3463NTX_3472NTX_WS6667_WS7667_WST_66
ORION 3850_TV2844W_TV4400NTX
GRUNDIG T70-1020 _ WF82-3020
MATSUI 28N03 _ 32WN03
DECCA / TATUNG D28N440_D28W440_D28W441_T21N421_T25N440_T28N440_T32W440_T32W441S




Click on image.








Posted By: FRANK at 04:34
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HOW TO ENTER SERVICE MODE TO BUSH - BAIER - BANG & OLUFSEN - BEKO - BLACK DIAMOND AND BRANDT TELEVISIONS

HOW TO ENTER SERVICE MODE TO BUSH - BAIER - BANG & OLUFSEN - BEKO - BLACK DIAMOND AND BRANDT TELEVISIONS





Universal remote code to check with Bush TV is [1056]

 BUSH _ BAIER _ BANG & OLFUSEN _ BEKO _ BLACK DIAMOND _ BRANDT  
BUSH RF6694D
  • Go to Bush TV main menu.
  • Press simultaneously MUTE and INFO button.
  • Change and select parameter press colored button To save  settings press ok
  • Press menu to exit from service mode
BUSH ITV2112
  • Open remote control cover, connect pin 10 and 17 of Samsung IC.
  • Use colored button to select and volume to change value settings.
  • To store press OK.
  • To Exit press ‘0’ key.
BUSH WS66-7673
  • Go to main menu and input [4 7 2 5]
  • Use colored button to select and change settings.
  • To save settings press OK.
  • To exit from service menu press Menu button.
BRANDT TX807 _ ITC008
  • TV in standby mode.
  • Shut off TV using main switch button / no electric activity in your television.
  • Next press [TXT] button and hold it.
  • Switch ON your television using main switch.
  • Press program + or program - to select and volume + or volume - to change the data value value.
  • To save and exit press power button on remote control.
BRANDT TX91 _ TX91G
  • TV in standby mode.
  • Shut off TV with main switch.
  • Press VT button on remote control and hold the key.
  • Switch on TV with main switch.
  • Release VT button and press VT buton again.
  • Service menu mode load in 0.1 seconds.
  • To change and select press program and volume button on remote control.
  • To save and exit press power button on remote control
BLACK DIAMOND BDS1451UK
  • Press Menu and press following key [4, 7, 2, 5.]
  • Factory mode will load in 0.1 second.
  • Use Red, Green, Blue, Yellow button to select and change.
  • To save settings press Ok button.
  • To exit from factory mode press MENU button.
BEKO TV22.1
  • Select menu and enter key 9, 3, 0 1
  • To select parameter press program up or program down.
  • To change the data value press volume up to increase and volume down to decrease.
  • Press Power button on the remote control to save and exit.
BAIER TV4K28MFV
  • Factory mode button is hidden button located below STOP button, left to  cancel button.
  • Press Red button go to next menu
  • Press program up and down to select item.
  • Press volume up and down to change value settings. 
  • To Save and exit press P.P.
BANG & OLFUSEN LX4500 _ LX5500 _ LX5000 _ LX6000
  • TV ON Press TV on remote control and short the pin service mode plugged p700 on PCB14.
  • Select press p+/p- button and change value pres v+/v- button.
  • Save change and exit press STOP button on remote control.
Posted By: FRANK at 02:33
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Wednesday, 27 February 2019

HOW TO ENTER SERVICE MODE TO BUSH / AKAI TVs

HOW TO ENTER SERVICE MODE TO BUSH / AKAI TVs

MODEL NUMBERS: CT-147MK2_CT-147R MK2_CT-217 MK2_CT-217R MK2_CT-207MK2_ CT-207RMK2 & CT-21W9

*Press simoultaneously "Display" button on the remote handset, and "Volume" button on the fron panel of the television.

** To call an item to adjust, use [PROG+ & PROG--ve] buttons.
*** To change the data value to selected item, use [V+ 7 V--ve0 buttons
**** To exit from service mode, switch OFF the TV using its front panel power ON/Off switch, and switch it back ON again
Posted By: FRANK at 05:40
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HOW TO ENTER SERVICE MANU TO BUSH MAXIM CTV 100 [LCD TV]

HOW TO ENTER SERVICE MANU TO BUSH MAXIM CTV 100 [LCD TV]

To enter the service menu to this LCD TV,

* Press the "Menu" button on the remote control, and the screen will display the "Customer Menu".
** Enter [1923] by digital buttons on the remote control, and the screen will now display

General Setup.
Video Setup.
Audio Setup.
Scaler Setup.
Options Setup.
Display Setup and More.

Every item in the service menu will give you to select the sub level that will contain several items.  You can navigate through by using the 'cursor" button on the remote control, and adjust the data value by using " > " and " < " buttons..
Be very careful to adjust any items now stored in theese options.  It will be best to write up the presnt stored data values, before adjusting, so that you can refer it later, if you have done it wrong.
You must be aware of what you are going to do.  A highly skilled task indeed.
Do not tamper the set, if you are not aware what to do with these adjustments
Posted By: FRANK at 05:21
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HOW TO ENTER SERVICE MODE TO BUSH AND AKAI TVs

HOW TO ENTER SERVICE MODE TO BUSH and AKAI TVs

MODELS: CT-147MK-2 / CT-147R-MK2 / CT-217 MK2 / CT-217R MK2 / CT-207 MK2 / CT-207R MK2 & CT-21W9.

 To enter service mode to these sets
* Simultaneously press "Display Button" on the remote handset, and "Volume (-)" button on the front panel of the TV.
** To call an item to adjust, use Prog + & Prog (-) buttons on the remote control. *** To adjust the data value to selected item, Press V + & V(-) buttons on the remote control. **** To exit from service mode, switch OFF the TV by its "Front Panel Power ON/OFF button.
Various parameters and their default values.  Default values may change set to set.

OSD
PARAMETER
DEFAULT VALUE
RANGE
V-SIZE/50Hz
VERTICAL SIZE ADJUSTMENT FOR 50Hz
12
0=>127
V-POSITION 60Hz
VERTICAL POSITION FOR 60Hz
32
0=>63
BLUE-DRIVE
BLUE DRIVE CONTROL
127
0=>127
V-POSITION 50Hz
VERTICAL POSITION FOR 50Hz
32
0=>63
GREEN DRIVE
GREEN DRIVE CONTROL
14
0=>15
RED-DRIVE
RED DRIVE CONTROL
85
0=>127
BLUE-BAS
BLUE BIAS CONTROL
78
0=>255
GREEN-BIAS
GREEN BIAS CONTROL
125
0=>255
RED-BIAS
RED BIAS CONTROL
90
0=>255
SUB-TINT
SUB TINT CONTROL
84
0=>127
SUB-COLOR
SUB COLOR ADJUST
63
0=>63
CONTRAST-CENTER
CONTRAST CENTER ADJUST
63
0=>63
SUB CONTRAST
SUB CONTRAST ADJUST
15
0=>63
SUB-BRIGHT
SUB BRIGHTNESS ADJUST
116
0=>127
SECAM R-Y DC
R-Y DC ADJUST FOR SECAM SYSTEM
15
0=>15
SECAM B-Y DC
B-Y DC ADJUST FOR SECAM SYSTEM
15
0=>15
RF-AGC DELAY
RF AGC DELAY ADJUST
29
0=>63 [May differ set to set]
H-PHASE 60Hz
HORIZONTAL PHASE ADJUST FOR 60HZ STANDARD
18
0=>31
H-PHASE 50Hz
HORIZONTAL PHASE ADJUST FOR 50Hz STANDARD
11
0=>31
V-LENEARITY
VERTICAL LENEARITY ADJUST
21
0=.31 [May differ to set toset]

Posted By: FRANK at 01:48
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Wednesday, 20 February 2019

BUSH WS66-7673 BRANDT - TX91 - TX91G SERVICE MODE

BUSH WS66-7673 BRANDT - TX91 - TX91G SERVICE MODE




BUSH WS66-7673 SERVICE MODE.

  • Enter the Main Menu.
  • Key in digits [4,7,2,5] by the remote control.
  • Service mode will be displayed.
  • Use colored buttons to select items and to adjust the data value.
  • Press "OK' button to save settings.
  • Press "Menu" button to 'Exit' service mode.
BRANDT - TX91 _ TX91G
  1. Make the TV to 'Standby' mode.
  2. Shut OFF the TV by its front panel Power Switch.
  3. Press and Hold 'VT' button on the remote control, and switch ON the TV by its Front Panel Power Switch.
  4. Release the 'VT' button, and press the "VT' button again.
  5. Service mode will be displayed.
  6. To call an item to adjust, use Prog(+) / Prog(-) buttons on the remote control.
  7. To adjust the data value to selected item, use Vol(+) / Vol(-) buttons on the remote control.
  8. Press "Power' button on the remote control to save and 'Exit' Service Mode
Posted By: FRANK at 05:53
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