Hi
So my out laws have had this LCD for several years now.
It was given to me as it wasn't turning on, ie: it would get the Soniq tune, but no picture.
I found the SMD fuse on the TCON board was intermittent/open, so replaced that, and we now get a picture. However, the picture is not constant....at least, not until we've warmed up.
When the machine is cold, its unstable and the picture flickers.....when its warm, its solid and on, no issues.
It has the infamous 1117 SM regulators, however, they seem to be doing a good job and working fine, ie: those with 5V supply give a 3.4V constant and the one with a 3.4v supply gives a 1.898v supply.
Theres a couple of previous posts about the ribbon cables not being the best and sure, when you move them hot OR cold the picture flickers. But when left alone, all is well.
I'm leaning towards caps/filtering supply issues which don't come good until they have warmed up. Whats folks thoughts here? Is my diagnosis on the right track?
Thanks in advance,
So my out laws have had this LCD for several years now.
It was given to me as it wasn't turning on, ie: it would get the Soniq tune, but no picture.
I found the SMD fuse on the TCON board was intermittent/open, so replaced that, and we now get a picture. However, the picture is not constant....at least, not until we've warmed up.
When the machine is cold, its unstable and the picture flickers.....when its warm, its solid and on, no issues.
It has the infamous 1117 SM regulators, however, they seem to be doing a good job and working fine, ie: those with 5V supply give a 3.4V constant and the one with a 3.4v supply gives a 1.898v supply.
Theres a couple of previous posts about the ribbon cables not being the best and sure, when you move them hot OR cold the picture flickers. But when left alone, all is well.
I'm leaning towards caps/filtering supply issues which don't come good until they have warmed up. Whats folks thoughts here? Is my diagnosis on the right track?
Thanks in advance,
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