Hello,
I have a Westinghouse VR-4085DF. I've torn it open, expecting to find some bad caps, but didn't. I now suspect the inverter and just wanted confirmation if my logic was sound.
The TV powers on, the main logo is displayed, and if you hit menu real quick like, you can see the menu, however, the display dies really quick like. The power light is still blue, I can still turn the television off, etc.
If I hit menu again, I see the menu screen go away. So I know it's something relating with backlighting....
The bad news is the inverter part number is LS-1940T04001-064-S060078-15979-03
ShopJimmy doesn't carry it, they used to, they're not planning on getting anymore, and they cannot recommend a substitute. I imagine this is probably because the inverter's design is flawed.
I could probably purchase the same inverter off ebay or some place, but if the design is flawed, it'll just happen all over again.
Do you guys agree that I'm on the right track here, thinking it's a bad inverter? Or could it be something else?
The connector pin that connects it goes to the logic board and the power board. Tracing it, from the PSU, I see ~24.50VDC going into the inverter at all times, even after I loose display.
From the logic board, I see ~4.81VDC and ~3.35VDC going into it at all times, even after it loses power.
There's test pads by the mini-transformers that leave the inverter board. I test them, and ~0VDC after we lose power. I can't seem to test them quick enough to see what they read before hand. I suspect maybe one of them might be bad or something.
I can provide pictures if anyone wants them. But to me, it seems like it's definitely an inverter issue. The voltage going in doesn't change, but the voltage leaving does.
I have a Westinghouse VR-4085DF. I've torn it open, expecting to find some bad caps, but didn't. I now suspect the inverter and just wanted confirmation if my logic was sound.
The TV powers on, the main logo is displayed, and if you hit menu real quick like, you can see the menu, however, the display dies really quick like. The power light is still blue, I can still turn the television off, etc.
If I hit menu again, I see the menu screen go away. So I know it's something relating with backlighting....
The bad news is the inverter part number is LS-1940T04001-064-S060078-15979-03
ShopJimmy doesn't carry it, they used to, they're not planning on getting anymore, and they cannot recommend a substitute. I imagine this is probably because the inverter's design is flawed.
I could probably purchase the same inverter off ebay or some place, but if the design is flawed, it'll just happen all over again.
Do you guys agree that I'm on the right track here, thinking it's a bad inverter? Or could it be something else?
The connector pin that connects it goes to the logic board and the power board. Tracing it, from the PSU, I see ~24.50VDC going into the inverter at all times, even after I loose display.
From the logic board, I see ~4.81VDC and ~3.35VDC going into it at all times, even after it loses power.
There's test pads by the mini-transformers that leave the inverter board. I test them, and ~0VDC after we lose power. I can't seem to test them quick enough to see what they read before hand. I suspect maybe one of them might be bad or something.
I can provide pictures if anyone wants them. But to me, it seems like it's definitely an inverter issue. The voltage going in doesn't change, but the voltage leaving does.
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