I had my ACER AL1916b blow up on me the other day and ever since have been trying to repair it. So I've been doing a fair bit of reading on the forums and followed the advice given to others, but unfortunately struck a dead end.
Basically the problem began with a bang that almost knocked me out of my seat. The LCD immediately switched off and couldn't be turned on anymore. I inspected the power board and noticed some bulged caps (CapXon) as well as the mos-fet chip (FSDM0565r) which had been blown apart (see pics which are all post-cap replacement). It took me a few days to find the rest of the chip as shown in the picture
I swapped all the caps on the board for new ones and also put in a new mos-fet chip.
However the monitor is still completely dead. I then checked voltages across the power board and noticed that the input side is apparently working well. There is 330V through the 400V capacitor. But there is no power at all on the output side after the transformer.
Therefore I suspect the transformer has shorted, which might explain why the first mos-fet exploded, although I don't understand why it didn't also blow the new one ive installed. The pins of the primary winding give a resistance reading of 0 ohms, as do the secondary winding pins.
Any suggestions on what to try next, or any other ideas in general?
I've tried looking for a suitable replacement for the transformer but it is hard to find.
Basically the problem began with a bang that almost knocked me out of my seat. The LCD immediately switched off and couldn't be turned on anymore. I inspected the power board and noticed some bulged caps (CapXon) as well as the mos-fet chip (FSDM0565r) which had been blown apart (see pics which are all post-cap replacement). It took me a few days to find the rest of the chip as shown in the picture
I swapped all the caps on the board for new ones and also put in a new mos-fet chip.
However the monitor is still completely dead. I then checked voltages across the power board and noticed that the input side is apparently working well. There is 330V through the 400V capacitor. But there is no power at all on the output side after the transformer.
Therefore I suspect the transformer has shorted, which might explain why the first mos-fet exploded, although I don't understand why it didn't also blow the new one ive installed. The pins of the primary winding give a resistance reading of 0 ohms, as do the secondary winding pins.
Any suggestions on what to try next, or any other ideas in general?
I've tried looking for a suitable replacement for the transformer but it is hard to find.
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