Re: Hitachi LE42H508 no power....

I had watched a video online recommending to test this way...
Regardless of my poor testing, any suggestions?
Since I bought and replaced the PSU and still no change, what's the next step?

Thanks

Re: Hitachi LE42H508 no power....



By directly do you mean bridge the PS-ON and BL-ON with a tiny alligator? because that's all I did WITH the connector disconnected. The only testing with the connector in place was with the MM in DC, the blk probe on one of the GND pins and using the red probe on PS-ON, BL-ON and the 12.3 (x3) with no readings whatsoever. I tried using the frame as ground with no difference.

...

Re: Hitachi LE42H508 no power....



You lost me... That'll require a much more detailed walk thru please. this is my 1st attempt at a TV teardown... I usually use a M/M on motorcycles or cars.

TIA...

Re: Hitachi LE42H508 no power....

That's the oddest thing... I could not get any readings on either of the top 2 pins even when jumped together. Yet the bottom 3 would read 12.3V ....
I didn't even try jumping the top 2 pins on the replacement power supply,I unboxed it,swapped it in, plugged the TV in,and tested with pins connected to the ribbon and nothing.

Powered down while watching, unplugged from wall, checked outlet, replugged, came back on for about 3 minutes then died and never came back on.
If I unplug it, wait and replug and power on, I sometimes get a momentary blue horizontal "strobe" and that's it.
Did some online reading, took off the back cover and using a multimeter, checked the fuse for continuity (good) but could not get any DC volts outbound from the power supply board so I ordered one. Got it today and.... no change.
So what else could it be? I tested the pins in the closeup using the legend and never...

Re: New Members - please post your introductions here

Greetings, hope the forum can help me out as electronics are my strongest...

Cheers!