Toshiba 37RV530U No power

[Jim1590]

Re: Toshiba 37RV530U No power

Strange, I do not have a second 24v inverter cable as shown in the diagram

[newtothis]

Re: Toshiba 37RV530U No power

Strange, I do not have a second 24v inverter cable as shown in the diagram

Manual covers larger screens which will have more than one inverter... as yours is the 37" it will only have the one.

[tom66]

Re: Toshiba 37RV530U No power

So you can't see any marks on the device now it is cleaned?

[Jim1590]

Re: Toshiba 37RV530U No power

The blur / mark on the bottom of the component in the picture cleaned off. The only thing I see on the component other than the printing is the very small little "hole" so to speak in the upper left hand corner. I do NOT think that is a burn, I think it is part of the design. The hole is just too neat. But I really have no clue. I will take another picture under magnification this evening when I get out of work. The mark was hard to spot at first because it was positional. I had to hold it at a certain angle to see it. I was able to read the part number which takes up the entire part face, I do not think I should have been able to do that if it was a burn through.

All I did was clean it off with a small amount of rubbing alcohol in order to read the part number.

[newtothis]

Re: Toshiba 37RV530U No power

The blur / mark on the bottom of the component in the picture cleaned off. The only thing I see on the component other than the printing is the very small little "hole" so to speak in the upper left hand corner. I do NOT think that is a burn, I think it is part of the design. The hole is just too neat. But I really have no clue. I will take another picture under magnification this evening when I get out of work. The mark was hard to spot at first because it was positional. I had to hold it at a certain angle to see it. I was able to read the part number which takes up the entire part face, I do not think I should have been able to do that if it was a burn through.

All I did was clean it off with a small amount of rubbing alcohol in order to read the part number.

The divot you are referring to is a positional reference point so engineers know which orientation the device should be installed

[Jim1590]

Re: Toshiba 37RV530U No power

Good to know, should have cleaned it off sooner! Well not that that is sorted out....

Thanks, I will file that lesson away for future reference.

[picmax]

Re: Toshiba 37RV530U No power

I use the latest AutoDesk Design Review. It works but you have to turn of the WHITE MASK layer and all the layers that draws a line and circle to each component.

http://www.parametrx.com/software/DWFViewer.htm

*** Still no joy with 6.5, though when i try opening any of the images within the manual directly with DWF Viewer I see it for a fraction of a second then it just turns grey :S ***

[Jim1590]

Re: Toshiba 37RV530U No power

Sorry to revive the older thread but have some updates.

Got a power board on eBay, appears to work fine.
Replaced backlight board, screen lights up.

Now, no picture. I have volume when I hooked a audio cable up off a Xbox. Volume went up and down. Changing inputs seemed to have worked as well. Just no video.

Tcon, or main board? Luckily those are to be found on eBay.

Thanks!

[stephenhill]

Re: Toshiba 37RV530U No power

This is a very old thread, but I have the same unit ( Toshiba 37RV530U ) with the same symptoms as yours had after you replaced the power board. ( I have normal on/off operation via button or remote, expected LCD behaviour, sound works, changing inputs works, backlite is lighted - but no picture, ever ).

I assumed it was the main board so for $26 I bought a "known good" replacement - symptoms are the same. So I guess it wasn't the main board in this case. Also I verified an LVDS signal on CN60 as the SMART2008-LCD108-V11 service doc posted earlier said.

I will try to measure other power supply voltages, but as the doc said "Suspect the LCD Control Board" I will look at that too and see if a swap is possible for not too high a price.


This TV was fairly expensive (to me) when we bought it new. About a year out of warranty it died, and I paid $150 to have it repaired. About 3 years later it died again and I paid $45 for a used main board and it was fine for another 2 years. If it isn't too much money I would still like to resurrect it.