have hitachi 55hds52 with bad power supply (HA01572). have stby Voltages but can't get 24, 10.5, or 5.6 Voltages. have forced PSU on by connecting pin 3 to pin 6-7 and nothing. anybody ever work on these PSU ??? Can they be debugged as a stand alone (without load) ??
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Picked up a bahemoth plasma TV not too long ago and just now getting around to looking at it.
No picture but you hear the TV static (white noise) playing loud and clear.
The back was already taken off (and no screws were provided) as the previous owner had already taken a look.
But it seems they didn't get too far and just left it.
When I first took a look I was amazed at how pristine the inside looked.
Its as if the TV had been in a time capsule.
Caps looked like they were just pulled off the self.
Copper coils had no sign of corrosion on... -
Hello guys,
I have a Philips 240B7QPJEB. The monitor seems completely dead.
I opened it and measured the voltages of the powersupply. I found that a mosfet was dead and replaced it.
On the connector, that goes to the TCON board, all voltages 15-19V and 5V are present.
The small connector on the left of the PSU has two cables with 18V and all the other have 0.2V. It connects on this small connector on the left ontop of the panel. I guess the backlight? Seens fine I guess.
The weird thing is, that the Power LED is powered over the TCON board.
On The TCON...12-28-2024, 02:12 PM -
Do you know where I can find a firmware upgrade for the Hitachi 42HDT79 plasma TV? My set currently has firmware V0112.0001.
Their service website seems to be on SalesForce now, which requires a login.
Thanks.11-05-2021, 11:55 PM -
Hi!
I am working on a Samsung PN60E530A3FXZA and had some questions. The power supply looked pretty bad. There where heavy burn marks on the two thermistors and all the traces on the cold side from the larger transformer. For the larger transformer, there was discoluration on some of the traces for the hot side as well.
I have seen other SMPS's for this panel that looked similar and replacing the thermistors did not fix the issue. The thermistors readed short circuit.
Anyway, replacing the SMPS wasn't too expensive and I did along with the Y-Sustain board,...03-08-2019, 07:41 PM -
Hi all. Up until 3 years ago I used component video as the connection between my Comcast cable box and this TV and never had any issues with it -- it always worked perfectly. Then I upgraded my cable service and the new box had only an HDMI connection. The Comcast remote controls both the cable box and the TV. About 50% of the time, when I would first turn the TV on I would get video but no sound. After trying new cables, a new cable box, and switching between the two HDMI ports had made no difference, I changed the video source to see if that made any difference. It did not but I did notice that...
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