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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..............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!

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Monday, 18 March 2019

MEMOREX MT2271SM HOW TO ENTER SERVICE MODE - ADJUSTMENTS - MEMOREX MT2271SM (A-SERIES) - UNIVERSAL REMOTE CONTROL SET-UP CODES

HOW TO ENTER SERVICE MODE - ADJUSTMENTS - MEMOREX MT2271SM (A-Series) - Universal Remote Control Set-up Codes



ON-SCREEN DISPLAY ADJUSTMENT
  • In the condition of NO indication on the screen.
  • Press the VOL. DOWN button on the set and the Channel button (9) on the remote control for more than 1 second to appear the adjustment mode on the screen.
  • Use the Channel UP/DOWN button or Channel button (0-9) on the remote control to select the options.
  • Press the MENU button on the remote control to end the adjustments.
FUNCTIONS
RF-AGC DELAY
  1. Receive an 60dB monoscope pattern.
  2. Connect the digital voltmeter to TP001 (R606).
  3. Activate the adjustment mode display and press the channel button (02) on the remote control to select "RF AGC DELAY".
  4. Press the VOL. UP/DOWN button on the remote control until the digital voltmeter is 2.65 ±0.05V.
CUT-OFF
Adjust the unit to the following settings.
  • R.DRIVE=73, B.DRIVE=61, R.BIAS=88, G.BIAS=74, B.BIAS=73, BRIGHTNESS=124, CONTRAST=100
  • Place the set with Aging Test for more than 15 minutes.
  • Activate the adjustment mode display and press the channel button (01) on the remote control to select "CUT OFF".
  • Adjust the Screen Volume until a dim raster is obtained.
WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
  1. Place the set with Aging Test for more than 10 minutes.
  2. Receive the color bar pattern.
  3. Using the remote control set the brightness and contrast to normal position.
  4. Activate the adjustment mode display and press the channel button (10) on the remote control to select "R.BIAS".
  5. Using the VOL. UP/DOWN button on the remote control, adjust the R.BIAS.
  6. Press the CH. UP/DOWN button on the remote control to select the "R.DRIVE", "B.DRIVE", "G.BIAS" or "B.BIAS".
  7. Using the VOL. UP/DOWN button on the remote control, adjust the R.DRIVE, B.DRIVE, G.BIAS or B.BIAS.
  8. Perform the above adjustments 6 and 7 until the white color is looked like a white.
SUB TINT / SUB COLOR
  1. Receive the color bar pattern. (RF Input)
  2. Connect the oscilloscope toTP023.
  3. Activate the adjustment mode display and press the channel button (16) on the remote control to select "TINT".
  4. Press the VOL. UP/DOWN button on the remote control until the section "A" becomes as straight line.
  5. Connect the oscilloscope to TP- 022.
  6. Press the CH DOWN button once to set to "COLOR" mode.
  7. Press the VOL. UP/DOWN button on the remote control until the red color level is adjusted to 110% of the white level
  8. Receive the color bar pattern. (Audio Video Input)
  9. Press the TV/AV button on the remote control to set to the AV mode. Then perform the above adjustments.
Universal remote control set-up codes
With GE remote control: 1091 0004 0009 0049 0051 0135 0031 0000 0268 0310 0001 {000, 001, 004, 006, 009, 031, 046, 049, 051, 082, 083,
135, 162, 268, 310}
RCA RCR 311W: 1004, 1006, 1013, 1019, 1047, 1054, 1163, 1167, 1205, 1207, 1213, 1230
RCA RCR 312W: 10154, 10463, 10150, 10178, 10016
6-IN-1 Universal remote: 014,022,062,095,096
Posted By: FRANK at 04:06
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