Hello this will be my first real post here. I have been reading these forums for awhile, hoping to learn more about component level repair for HDTVs and I have one that I am stumped on.
This is a Sanyo DP32648 32" LED HDTV. The symptoms are no power, no display. The green standby power light will briefly turn on upon pressing the power button, but it will turn off after a few moments.
I am very new to troubleshooting and repairing components on power supplies, so please bear with me here. I have already purchased and replaced the main board, thinking it may have been that based on some research I had done looking into the problem. Having received the main board and installing it, there is no change. Same exact symptoms. This is when I began to troubleshoot further.
I don't know exactly what you guys will need to help troubleshoot this, but having read many threads here, I get a sense of the general questions you guys ask so I have already done what I could or know how to and documented my findings. The multimeter readings were taken with only the main board connected and not the inverter. Here they are:
The pins on the main board connector read as following:
Plugged in and OFF:
PSON: 0.00
5V: 5.04v, no green light on face of TV.
12V: 0.10v
24V: 0.00
Plugged in and ON:
PSON: 5.00v
5V: 5.00v
12: 0.11v
24V: 0.00
I am afraid that this is where my knowledge of what to do next ends. Hopefully you guys can help me. I have a soldering iron and basically all the tools I would need to further troubleshoot this upon your direction. I have attached some pictures below. I hope it's enough, but ask if you need something more specific. Thanks a lot!
This is a Sanyo DP32648 32" LED HDTV. The symptoms are no power, no display. The green standby power light will briefly turn on upon pressing the power button, but it will turn off after a few moments.
I am very new to troubleshooting and repairing components on power supplies, so please bear with me here. I have already purchased and replaced the main board, thinking it may have been that based on some research I had done looking into the problem. Having received the main board and installing it, there is no change. Same exact symptoms. This is when I began to troubleshoot further.
I don't know exactly what you guys will need to help troubleshoot this, but having read many threads here, I get a sense of the general questions you guys ask so I have already done what I could or know how to and documented my findings. The multimeter readings were taken with only the main board connected and not the inverter. Here they are:
- All capacitors appear to be in good visible condition (i.e. not bulging, etc.)
- The large main capacitor C800 marked 240V/470uF reads at 169DCV while the TV is plugged in and either powered on or off. There is no change.
The pins on the main board connector read as following:
Plugged in and OFF:
PSON: 0.00
5V: 5.04v, no green light on face of TV.
12V: 0.10v
24V: 0.00
Plugged in and ON:
PSON: 5.00v
5V: 5.00v
12: 0.11v
24V: 0.00
I am afraid that this is where my knowledge of what to do next ends. Hopefully you guys can help me. I have a soldering iron and basically all the tools I would need to further troubleshoot this upon your direction. I have attached some pictures below. I hope it's enough, but ask if you need something more specific. Thanks a lot!
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