Ok, last night got a 26" Grundig LCD TV from outside the dumpster downstairs.
Chassis / inside are made by Beko. Power supply's basically two flyback converters on the same board. Silkscreened on the board it says the outputs are 24v @ 5A and 12v @ 5A. Controllers are Infineon ICE1QS01. Caps are / were 3x G-Luxon LU 680u/35v and an LZ 220u/35v on the 24v output, and 4x Daewoo RF 1000u/25v on the 12v output.
Now... The 24v output is around 3,9v and the 12v sits around 10,6v. That's with or without a load (two car bulbs in series on the 24v and a 12v fan on the 12v output).
The voltage on the filter caps for the ICE's are 14.895v for the 12v one and "bouncing around" between 12 and 15v on the 24v controller.
I've replaced, albeit temporarily, the 3 big Luxons with two Panasonic FK 1000u/35v, and the small one with a pair of Rubycon YXF 47u/35v. Same Ruby's on the ICE Vcc's. Also replaced the 150u/400v G-Luxon primary cap with a 150u/400v Elna. Even went as far as replacing the two rectifiers on the 24v output with STPS20H100's (originals are Fairchild "YM3010N", on which i've yet to find a datasheet).
Any clue what i should be looking for?
My hunch says "feedback", but i've yet to trace the circuit...
Chassis / inside are made by Beko. Power supply's basically two flyback converters on the same board. Silkscreened on the board it says the outputs are 24v @ 5A and 12v @ 5A. Controllers are Infineon ICE1QS01. Caps are / were 3x G-Luxon LU 680u/35v and an LZ 220u/35v on the 24v output, and 4x Daewoo RF 1000u/25v on the 12v output.
Now... The 24v output is around 3,9v and the 12v sits around 10,6v. That's with or without a load (two car bulbs in series on the 24v and a 12v fan on the 12v output).
The voltage on the filter caps for the ICE's are 14.895v for the 12v one and "bouncing around" between 12 and 15v on the 24v controller.
I've replaced, albeit temporarily, the 3 big Luxons with two Panasonic FK 1000u/35v, and the small one with a pair of Rubycon YXF 47u/35v. Same Ruby's on the ICE Vcc's. Also replaced the 150u/400v G-Luxon primary cap with a 150u/400v Elna. Even went as far as replacing the two rectifiers on the 24v output with STPS20H100's (originals are Fairchild "YM3010N", on which i've yet to find a datasheet).
Any clue what i should be looking for?

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