Re: Sharp Lc37sb24u No Picture/audio

Anyone?

Re: Sharp Lc37sb24u No Picture/audio

I unplugged the inverter board and get no clicks on the relay. Only when I plug in the two white connectors does it click on and off as described in the previous post

Re: Sharp Lc37sb24u No Picture/audio

If I unplug the two white connectors, then plug the TV in, I get no clicks on the relay, either on or off.

Re: Sharp Lc37sb24u No Picture/audio

Correction: I meant to say "I also noticed that this relay(red box in picture) actually clicks "on" when the TV is first plugged in. At that time I get 13V (not 37V) at pins 1-4 on the 12 pin connector, then after about five seconds, the relay kicks "off" and the voltage to these 4 pins goes to zero volts. This is also when the power and OPC lights begin to flash.

Re: Sharp Lc37sb24u No Picture/audio

I also noticed that this relay(red box in picture) actually clicks "on" when the TV is first plugged in. At that time I get 37V at pins 1-4 on the 12 pin connector, then after about five seconds, the relay kicks "off" and the voltage to these 4 pins goes to zero volts. This is also when the power and OPC lights begin to flash....

Re: Sharp Lc37sb24u No Picture/audio

Not sure what you mean by board designations? Here's what happens. If I have the back on it, I do the reset, and the blue screen comes on, but no OSD, and the green power light stays on. If I reset it with the back off, I do not get the blue screen. The green power light comes on for approx 5 seconds, then the power light and the OPC light blink twice, then the OPC light blinks three times. I tested the voltage as you stated and only one pin, the 10 pin on the the 12 pin connector, had any voltage, which was 5v. I've attached a pic of the bottom...

Re: Sharp Lc37sb24u No Picture/audio

Here I some pics of the boards. None of the capacitors show signs of being bad. I checked for cracked solder on the two boards in the pics, didnt see any but I imagine there hard to find if they are cracked. I did a reset, hold channel down and up volume buttons while plugging the TV in. I now get a green "on" light and a blue screen but nothing else. Thought about just buying a used power supply board and trying that. Any suggestions would be appreciated....

I am currently working on a Sharp Lc37sb24u. I was originally thinking it had a bad inverter board or power supply. There is not video or audio. When i turn it on, the green power light comes on for approx 5 seconds, then the power light and the OPC light blink twice, then the OPC light blinks three times. Then it repeats this sequence, the power light and the OPC light blink twice, then the OPC light blinks three times. Is there anywhere that tells what this sequence means? I've read where it could be a bad inverter board or power supply. Any help would be appreciated. Thanks!!