Re: Sony 55X8500E no power
I did follow the flow chart on the service manual. but not sure what is the root cause.
Getting 0V on both R441 and R527, which suggest IC401 is faulty. At the same time, I also get 0V on C400-C412.
Would you shed some light please? Thank you....
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Sony 55X8500E no power
Are they all jump with 1K resistor?...
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Re: Sony 55X8500E no power
Just found a short on ZD905 near IC901. Not sure is this related to the VCC 12V missing....
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Re: Sony 55X8500E no power
Resolder those Schottky diodes but nothing changed...
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Re: Sony 55X8500E no power
With 1K resistor jumping the 3.3V standby and power on pin. Power board is still not producing 24V on CN6401 pin25, 27 and 28.
Does it mean both main and power board are faulty?...
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Re: Sony 55X8500E no power
Will double check all the solder joints. Thanks
C518 is showing 3.5v....
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Re: Sony 55X8500E no power
Had a detailed look, can't find any bad solder joints.
Would you mind to point out the component number which looks suspicious?
On the other hand, tested all 6 black light strips light up without any problem? Is it possible the 2.8V I get from BL_ERR is indicating something else?
Much appreciated.
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Re: Sony 55X8500E no power
Here is the service manual I found online...
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Re: Sony 55X8500E no power
Just tried to ground the pin 8 but nothing happened....
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Re: Sony 55X8500E no power
Thanks for your reply.
I checked no short on Q123....
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Sony 55X8500E no power
Hi folks,
I have a Sony 55X8500E that has no power at all, not even standby light.
Tried to jump pin5 and pin9 on the power board with a 1K resistor and got the following measurements.
CN6801
Pin 1 : 0V
Pin 2 : 77.39V
Pin 3 : 77.39V
Pin 4 : 77.39V
CN6802
Pin 1 : 0V
Pin 2 : 0V
Pin 3 : 1.52V
Pin 4 : 1.49V
Pin 5 : 1.49V
Pin 6 : 1.45V
Pin 7 : 1.49V
CN6401
Pin 1 : 0V
Pin 2 : 0V
Pin 3 : 0V
Pin 4 : 0V
Pin 5 : 3.5V...
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Re: New Members - please post your introductions here
Hi Everyone, new joiner from UK
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