Wanted: Schematics for Loewe MB180 chassis

[jogri]

Hi guys,

i am trying to fix an older Loewe TV (Xelos 32), but i can't find any schematics for that particular model (there are a lot of manuals for the 2650 chassis and/or the Xelos 32A, but not for the MB180 chassis). Does anyone of you happen to have those schematics? I tried contacting Loewe, but apparently they decided to no longer give away service manuals (they had a FTP server with almost all service manuals until a few years ago).

The problem: TV doesn't power up and just sits there in standby. Seems to be Loewes way of displaying faults, they just pull up the cathode voltage of the photodiode in the optocoupler -> disables the main transformer, also used for normal standby. Neat trick.

[BreakingOhmsLaw]

If memory serves well, that chassis blinks the orange LED to give some indication of the fault. Not sure if this model did that.

[jogri]

No, this model doesn't blink at all, it just sits there with the orange/red LED lit up. Could be the power board, but none of the usual suspects were defect so the fault is probably somewhere on the main board (don't know if i could fix that, lots of 0204 and unlabeled chips).