This is the oscillopscope I recently bought to fix my Viglen computer monitor (on another thread). Well after being shown it turned on and a sort of pattern on the screen, I was assured by the seller it worked fine and just needed new probes (it came with none).
Well it didnt work and I spent a half hour on the phone with him trying things he suggested. In the end the dispay failed completely and the guy apologised and refunded me.
Well why I was waiting to get another one I thouight I have nothing to loose now and stripped the scope out completely inspecting everything. Straight away I noticed lots of signs of it being in a very damp place and eveven a bit of muddy dust in it. I could even see signs of water ingess on the PCB in some places and water marks & ring marks around solder pads and the solder gone grey. So I cleaned up the board & resoldered all pads like this and gave all switches a clean out with servisol switch cleaner. Well after I put it back together it seems I have it working. I have a line or dot depending on how I adjust focus and intensity etc moving fast or slow across the screen from left to right which I can speed up or slow down.
Does this sound like its doing what it should do?
I'm going to use the other scope to fix the monitor but this is a bonus if ive got it working again.
Well it didnt work and I spent a half hour on the phone with him trying things he suggested. In the end the dispay failed completely and the guy apologised and refunded me.
Well why I was waiting to get another one I thouight I have nothing to loose now and stripped the scope out completely inspecting everything. Straight away I noticed lots of signs of it being in a very damp place and eveven a bit of muddy dust in it. I could even see signs of water ingess on the PCB in some places and water marks & ring marks around solder pads and the solder gone grey. So I cleaned up the board & resoldered all pads like this and gave all switches a clean out with servisol switch cleaner. Well after I put it back together it seems I have it working. I have a line or dot depending on how I adjust focus and intensity etc moving fast or slow across the screen from left to right which I can speed up or slow down.
Does this sound like its doing what it should do?
I'm going to use the other scope to fix the monitor but this is a bonus if ive got it working again.
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