Question about Sony KV-36XBR450 36" TV

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KV-36XBR450 no pic/no sound 4 blinks standby (red light)

Sounds like unit is coming on, no pic/sound. 4 red light blinks, pause, 4 blinks again, etc.

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4 blinks meens no vertical deflection, check ic509 and q1505
regards,
daniel.

Posted on Jan 13, 2009

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1 Answer

Sony kv-36xbr450 36


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regards,steve.
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1 Answer

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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.
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White balance failure 5 times 5:0 or 5:1 • Video OUT (IC9001-IC9003) is faulty. • No raster is generated.
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• CRT drive (IC201) is faulty. (A Board) reference pulse output is small.
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Nov 07, 2008 | Sony KV-36XBR450 36" TV

1 Answer

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Hello maymet,

This sounds like the HV protection circuit is cutting off the TV due to a high current event in the set. This could be a problem in the High Voltage section of your TV (Horizontal output transistor, Integrated High Voltage Transformer, and y of the deflection components, and or the CRT in cases of shorts).

I would suggest that if you do not have a background in electronics, you should have an experienced TV technician troubleshoot and repair this problem.
This is due to the nature of the dangerous voltages that are present in the television.

I hope this helps,

Thank you,

Shuttle83

Nov 02, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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You will not be able to service this at home. Most of the time there are failures in the scan amplifiers and or the power supply that cause the fault you are describing.

Jerry G.

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The blinks can tell you the problem , is it 4 blinks that could be 3 different ics IC1509 Q1505 or IC502

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