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Samsung P50C450B1W - S/by issue.
Turnip:
Hi Folks,
Have one where on turn on get the Sammy Fa-Da where voltages rise to normal, then set reverts to S/by. Thought check for dries on the P/S and resoldered here and there.
No obvious shorts - Wonder if anyone has ideas - Thanks - Chris.
downunder:
Hi Chris,
Unplug the lead from PSU to Y-Main (Y-Sus). Turn it on and see if it stays on. If yes, then reconnect and unplug the lead from Y-Main to X-Main (Z-Sus). Turn it on and see if it stays on. If yes, then X-Main is faulty.
LED on Logic Board normally blinks once per second. If not possibly Main Board. Could also isolate the PSU and force it on and see if any of the LT rails fire up to prove the PSU is working. You won't get Vs as this is switched on by the Logic Board. PS-ON is 0V so you'll need to ground PS-ON to activate the power supply.
I'll upload the fast track guide for the Trump model if the forum accepts the file format. Bruce
Turnip:
Hi Bruce,
Thanks for the 'Heads Up' Always thought Sammy issues were dries on the P/S as done a few. Note 'Trump' accepted on Quuq, so will check it out.
Gather he's over here in the UK soon to play golf, maybe with our Queen or Prince Phil - After he's sorted long divided countries, China exports and EU imports, giving Russia a quick slap on the way.
Seems quite a chap in his own estimation - Chris.
Turnip:
Hi Bruce,
Did as suggested, then with the plugs in Vs / Va / Vsc / Ve were correct 'till the logic board turned Vs off. Led on logic flashes every three to four seconds - Don't know if it's significant. Low voltages on P/S are correct all the time, so guess logic senses an error somewhere - Bit complex, any more thoughts ? - Thanks - Chris.
downunder:
Hi Chris,
I note that the fast track guide mentions that the set will turn off if Y or X main is unplugged. Could well be the main board - see if you can generate test patterns as per attachment. If so, then main is the culprit.
Bruce
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