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!

©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 !

Saturday 9 March 2019

SONY KDL-40P2530 SERVICE MODE AND POWER SUPPLY CIRCUIT

SONY KDL-40P2530 SERVICE MODE AND POWER SUPPLY CIRCUIT


SONY KDL-40P2530 

SERVICE MODE AND POWER SUPPLY CIRCUIT 

SERVICE MODE 
Service adjustments to this model can be performed using the
supplied remote Commander RM-ED007.
How to enter into the Service Mode
1. Turn on the main power switch.
2. Press the following sequence of buttons on the Remote Commander.
ON SCREEN DISPLAY (i) > DGIT 5 > PROGRAM - > INPUT(AV) > INPUT (AV)
‘TT—’ will appear in the upper right corner of the screen. Other status information will also be displayed
3. Press ‘MENU’ on the remote commander to obtain the menu on the screen.
4. Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander.
5. Press the right arrow button to enter into the required menu item.
6. Press the ‘Menu’ button on the Remote Commander to quit the Service Mode when all adjustments have been completed.
Note : After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON
TT MODE 
Test Mode 2 is available by setting the TV for operation in Service Mode, OSD ‘TT’ appears. The functions described below are available by selecting the two numbers. To release the ‘Test mode 2’, press 00, 10, 20 ... twice or switch the TV set into Stand-by mode. In ‘TT Menu’ mode, it is possible to remove the Menu from the screen by pressing the Speaker Off button once. Pressing the Speaker OFF button a second time will cause the Menu to reappear. The function is kept even when the menu is not displayed on screen.
TT OSD Labels
1. Model configuration.
a. To set 26” AUO (TT68).
b. To set 26” Samsung (TT72).
c. To set 32” AUO (TT69).
d. To set 32” Samsung (TT73).
e. To set 20” Chi-Mei (TT71).
f. To set 40” Samsung (TT74).
2. Model destination.
3. Command prompt.
4. ECS enabled/disabled (TT31).
5. CBA is shown when the TV set is in CBA mode (This mode is available from Factory mode) (TT27).
6. Normal or Factory mode (TT19).
7. DDC enabled/disabled (TT65).
8. E is shown when EDID WP is enabled; - is shown otherwise (TT66).
9. O is shown when OTRUM is enabled; - is shown otherwise (TT38).
10. H is shown when Hotel mode is enabled; - is shown otherwise (TT37).
11. D is shown when Digital mode is enabled; A is shown when Analogue mode is enabled.
12. C (Default value) is shown when MSP Auto Carrier Mute function is enabled; - is shown otherwise (TT67).
13. M (Default value) is shown when AM sound is demodulated in MSP; A is shown when AFRIC demodulator is used (TT63).
14. S is shown when a SONY tuner is selected; P is shown when a PHILIPS tuner is selected (TT55).
15. C is shown when a Chi-Mei 20” panel is used; S is shown when a Samsung panel is used; A is shown when a AUO panel is used (Changed by TT68 and TT69) for 26” and 32” respectively; 3 is shown when a 40” Samsung A3 panel is used; 4 is shown when a 40” Samsung A4 panel is used (Changed by TT64).
16. Clk is shown when display clock is enabled; - is shown otherwise (TT36).
17. T is shown when digital test is enabled; - is shown otherwise (TT39).
18. W is shown when Watchdog is enabled; - is shown otherwise (TT54).
19. C is shown when chip select is enabled; - is shown instead (This mode is available from factory mode) (TT58).
20. V is shown when Visual I2C is enabled; - is shown otherwise (TT59).
SELF DIAGNOSING 
The identification of errors within the SE-1 chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flashing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be displayed through the LED (Series of flashes which must be counted).
LED BLINKING ERROR CODES 
Error Message
LED Code
Checked
Action
Power Supply Protection Error
03
In Normal mode.
Goes into standby. LED flashes 3 times.
Panel Error
04
In Normal mode.
Goes into standby. LED flashes 4 times.
NVM Error
05
In Initialisation state.
Adds error to Error Menu. LED flashes 5 times in factory mode.
IIC Error
06
In Initialisation state.
Adds error to Error Menu. LED flashes 6 times in factory mode.
HDMI Error
07
In Initialisation state.
Adds error to Error Menu. LED flashes 7 times in factory mode.
Digital Error
08
In Initialisation state.
Adds error to Error Menu. LED flashes 8 times in factory mode.
Tuner Error
09
In Initialisation state.
Adds error to Error Menu. LED flashes 9 times in factory mode.
Sound Processor Error
10
In Initialisation state.
Adds error to Error Menu. LED flashes 10 times in factory mode.
Video Processor (VCTP) Erro
11
In Initialisation state.
Adds error to Error Menu. LED flashes 11 times in factory mode.
Port Expander Error
12
In Initialisation state.
Adds error to Error Menu. LED flashes 12 times in factory mode.
RTC IC Error
13
In Initialisation state.
Adds error to Error Menu. LED flashes 13 times in factory mode.

POWER SUPPLY CIRCUIT 

TDA7495 AUDIO AMPLIFIER 

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Posted By: FRANK at 11:02
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