Mulja tv repair portal
Equipment Repairs => LCD TV forum => Topic started by: buffy on November 29, 2008,14:23:58
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:ciao: Hi... Sorry for cross posting - figured i would get a reply.... :music:
Got one of these in, problem..... Switch on you get green led, red led, green led, red, etc..... tripping?? inspection of board - nothing jumping out, no burning.... cant SEE any dry joints, but there again i am very old nowadays :laugh1: eyesight gone :loool: Come on GUYS you must have had this one its a crappy old Vestel!!! :wallbash:
carol
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Have you got any secondary volts?
Common is tube driver IC s/c?
If you got no secondary volts, SMPS Tx short on windings?
Horizontal s/c?
Need some more info
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I watched it trip last - it goes green for all of 4 secs, then red for 2, green for 4.... i havent measured if any volts yet, its a big heavy bugger, difficult to get into 'bright light' area, but i would think there must be something for the led to even come on - they onmy work with DC..... no heater, no cracking, buzzin, or shorting..... as i say nothing obvious, if the TX is gone - well only fit for tip... What is the tube driver IC location - on the tube base???? no rush on this one its a spare - be nice to fix though!!! Very rusty at all this stuff now :blush: :blush:
Anyway - i appear to sussed the Dull Tosh..... 'very careful adjustments in service mode'... that what i like about LCD - the boards are so much easier to check for volts etc... no ruddy big tube in the way... :laug:
Carol