I have to admit that I find it difficult to walk past something potentially useful in a bin/skip WHY. In this case it was an old Sanyo CE32HW (Vestel) LCD set someone had thoughtfully left sticking out of the appliance disposal bin in the local shopping centre.
It's clearly had a hard life, but so evidence of ever having been repaired before.
I powered it up and was rewarded with nice clear sound, backlight, but no picture.
A quick look inside revealed a few swollen cap's on the power supply panel- replacing those made no difference, which didn't come as much of a surprise really. (the remaining ones checked OK on a ESR meter).
Having read of a similar problem on another thread I decided to have a look at the T-con panel, skilfully hidden away between the metal panels. And there was the cause of the problem, clear to see. For some reason all the insulation on the last inch or so of the cable from the main board to the T-con board had disintegrated, leaving the bare wires to touch each other.
I haven't yet got around to 'repairing' the cable, it will have to wait until I am really bored and have nothing more useful to do with my time. Plus of course the possibility that some of the shorting wires may have caused damage to the main board???
Has anyone seen this before, or have any explanation as to why this may have happened? There is no evidence of water or any other fluid- just the heat off the back of the display perhaps?
It's clearly had a hard life, but so evidence of ever having been repaired before.
I powered it up and was rewarded with nice clear sound, backlight, but no picture.
A quick look inside revealed a few swollen cap's on the power supply panel- replacing those made no difference, which didn't come as much of a surprise really. (the remaining ones checked OK on a ESR meter).
Having read of a similar problem on another thread I decided to have a look at the T-con panel, skilfully hidden away between the metal panels. And there was the cause of the problem, clear to see. For some reason all the insulation on the last inch or so of the cable from the main board to the T-con board had disintegrated, leaving the bare wires to touch each other.
I haven't yet got around to 'repairing' the cable, it will have to wait until I am really bored and have nothing more useful to do with my time. Plus of course the possibility that some of the shorting wires may have caused damage to the main board???
Has anyone seen this before, or have any explanation as to why this may have happened? There is no evidence of water or any other fluid- just the heat off the back of the display perhaps?
Attached Files
Comment