KV-32XBR450 32" TV Problem (con't)

Improper white balance setting is the problem. If you wish to get more details visit the site linked here. http://electronicshelponline.blogspot.com/ White balance adjustment procedure is given.

Hi,
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Model / chassis:

Sony KV-XA25M83 Service Manual / Schematics

Price: $12.99 US

http://service-manuals-schematics.com/purchase.php?id=Sony+KV-XA25M83+Service+Manual+%2F+Schematics

Hi,
This is picture tube related problem and we call it incorrect white balance.
Adjust Screen Volts of picture tube and control knob wold be located on flyback transformer. If you have knowledge about tv and know that tv contains high voltage and you can take care of that then do it yourself or ask local tv repairman to fix it.
Thanks.

non of the blinks are good but here is yours
\
\5 times, Diagnosis: White balance failure (Not balanced) Possible causes: Video out (IC7101, 7201, 7301) is faulty (CR, CG, CB board), CRT drive (IC309) is faulty (A board), G2 is improperly adjusted. Symptoms of the problem: No raster is generated, CRT cathode current detection reference pulse output is small.

also not a DIY

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If there is sound from the TV but no pictures and the indicator on the front of the TV is blinking four times then check if the projection lamp is okay.
Otherwise replace the projection lamp.

I have seen this flashing before, this could be an indication that the picture tube is weak, what happens is that if the white balance is off there is a circuit called akb it monitors the kathode of each gun and if they are not in balance it will attempt to balance it out. if it can't the picture will begin to flash, sometimes in some models the power light will blink 5 times. On some models the power light will only flash if the tv gives up trying to compinsate for white balance and shuts off compeletely. If you see the tv shutting off with 5 blinks then you know for sure it is time for a new set.

Here is the info on your problem. These are problems that have been found in the field.


Found cold solder on IC201 on the A Board.
IC201 P/N
875210025 CRT Driver

Found IC9001 on the C Board defective.
IC9001 875936083 TDA6111Q/N4 Video Output

White balance failure 5 times 5:0 or 5:1 • Video OUT (IC9001-IC9003) is faulty. • No raster is generated.
(not balanced) (C Board) • CRT cathode current detection
• CRT drive (IC201) is faulty. (A Board) reference pulse output is small.
• G2 is improperly adjusted. (see Note 2)

Hello Speakout,
You do not need that board. You can resolve this problem by adjusting White-Balance. (greenish picture tone)
I think you have enough technical knowledge how to adjust white balance of this TV.

5 times flash light shows that your TV has white balance error. If you have basic knowledge of electronics, then adjust G2 voltage of tv. hope problem will be solved.

Good day.
Your system is encountering a hold down issue. Ussually, this is the absence of signals due to malfunctioning parts particularly in the vertical circuitry.it could Eigther be an IC, transistor or a defective resistor. However, it can sometimes be remedied by simply resoldering the loose components in the circuitry.

response is highly appreciated.

chris