Sony KDL-32L504 No Power ....Dead

[stanm]

Re: Sony KDL-32L504 No Power ....Dead

Wil do, thanks for the suggestion. I am at work now but will try that this eveing. To make sure I am understanding plug everthing back into the Power Board except the IR Board? Once again thanks Dpiroli3!

[dpiroli3]

Re: Sony KDL-32L504 No Power ....Dead

that would be correct. and acutally Ive seen 2 bad ir boards in these sets. 1 would not turn on and the other the remote didnt work, another had a bad main board.

[stanm]

Re: Sony KDL-32L504 No Power ....Dead

ok, performed the check you suggested, I got nothing so I started unpluging plugs on the main board and still got nothing. One thing I did notice is that when I unplugged all the plugs from the main board I found that that the 3.3 volts from the power board was gone so I unplugged the main board again and checked just the power board and it was there. Plugged in the main board and it went away on got like .06 VDC. Does this look like a bad main board? I how can be sure the power board is working? Sorry for all the questions but any help is appriciated. One more question, the power board will not power up until signaled by the main board?

Thanks,
Stan

[dpiroli3]

Re: Sony KDL-32L504 No Power ....Dead

the standby is going into protection on the power supply, my guess is the main board is bad if you have everything unplugged from it. there are many available on ebay starting at around $60. find one that accepts returns.

[stanm]

Re: Sony KDL-32L504 No Power ....Dead

Thanks for good advise, my mom just called and said her Phillips TV is on the blink. When you turn it on it comes on for a second or two then goes off. I have replaced all the capacitors on the Power Board on this set a couple of years ago. Once I get it I will have the model # and maybe you could direct me where and what to look at? Once again thank you for all your help.

Stan

[budm]

Re: Sony KDL-32L504 No Power ....Dead

I think you should try 2.2 Ohms 5W resistor as the load for the 3.3V power supply to see if it can handle 1.5A load, you can try 4.7 Ohms 1W (for 0.7A load) too for lighter load.

[stanm]

Re: Sony KDL-32L504 No Power ....Dead

I got several resistors from work that you suggested. I put the 4.7 Ohms 1 W across the 3.3v Power Supply, the voltage was still there so it looks as if the Power Supply is good. Here is something I had not done and should have tried a while back. I checked the 3.3v Power Supply pin 3 I think to ground and got 8 K Ohms, that looked good, I did the same with the Main Board and and got .6 Ohms. So it looks as if the Main Board is shorted and without having a test set to plug it into it is almost impossible to find it. So I think I need to start looking for one. Do you agree or do have any ideas on how to troubleshoot the board? Once again thanks for all your help as it has been very usefull along with the suggested sites.

Stan,