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

PHILIPS 26TA2800/93 - 26TA2800/98 - 26TA2800/79 - 32TA2800/93 - 32TA2800/98 - 32TA2800/79 SERVICE MODE TROUBLESHOOTING AND POWER SUPPLY CIRCUIT

PHILIPS 26TA2800/93 - 26TA2800/98 - 26TA2800/79 - 32TA2800/93 - 32TA2800/98 - 32TA2800/79 SERVICE MODE TROUBLESHOOTING AND POWER SUPPLY CIRCUIT


PHILIPS 26TA2800/93 - 26TA2800/98 - 26TA2800/79 - 32TA2800/93 - 32TA2800/98 - 32TA2800/79 


HOW TO ENTER SERVICE MODE TROUBLESHOOTING AND POWER SUPPLY CIRCUIT 


HOW TO ENTER TO FACTORY MODE It can enter Factory Mode 1. Press" Menu in normal operation mode to enter OSD.
2. Press "062596+Menu on the button (RC) remote control in OSD. 3. The screen will appear F3 content in the bottom, choose it and press the right key.
HOW TO ENTER TO CSM
It can display CSM windows message when press Menu+123654 on the button (RC) remote control in normal operation mode.

OSD behavior:
Before press number key change OSD item
Now remove previous function, press number key then press OK will change value
Step1: press MENU+062596 in user mode.
tep2: choose F3 98 V1.77.74.3,press the right key, then enter the factory mode
DISASSEMBLING THE BACK COVER
Remove the Back cover assy.
Remove the 10 screws on the bottom side


 TROUBLE SHOOTING
No work/LED is off
Check if power switch is normal > Replace Power switch
Check IR board CN0201 pin3=5V,pin5=5V > Check IR board
Check scaler board U7105 pin1=24V,pin4=5V
No raster/picture too dim
Check power board CN913,pin1=24V, pin3=12V > Check Scaler board
Check power board IC920 pin2,IC970 pin2=12V > Check IC920,IC970
Check scaler board
No picture/LED is green
Check scaler board U7105 pin1=24V,pin4=5V > Check power
Check if working voltage U7104 pin1=5V, pin4=3.3V > Check circuit around each regulator and eliminate short and open situation
Check if clock source X4101 > Replace X4101
Check if RGB,clk,H/V and DE signal output 128 bits TTL > Try to replace flash Rom EEPROM
Check resistors-network > Replace bad resistors network
Replace LVDS cable
No TV sound
Check if tuner TU2101 pin11 output IF signal > Replace TU2101
Check U4101
No earthphone sound
Check U6301 pin33=3.3V > Eliminate short and open situation
Check U6303 pin6= 5V pin5,7=HPL/HPR >  Replace U6303
Replace Side AV Board
No remote function
Tty another remote control > Replace one good remote control
Check IR receiver
7.LED and function key poor
Check circuit around control board and cable between control board and scaler board
POWER SUPPLY CIRCUIT 
SMPS DRIVER IC FAN5541N

CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 02:10
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