I have a Thinkpad T61 with a dead inverter, well, I'm pretty sure it's the inverter and not the backlights but not 100%. I read somewhere that you could hold the probes from a frequency meter near the output of the inverter to check for output. Using this method, it's dead.
So I purchased a replacement inverter and the replacement doesn't work either. I can see problems with the replacement when comparing the two. In 1-IMG 0213, the original is on top and the replacement below. In the set of pads labeled CP1 CP2 CP3, there's a solder blob on CP1 of the replacement that isn't present on the original. What's the function of these pads? I was thinking of removing the solder blob from CP1, but there's another problem on the replacement board. In 1-IMG 217-001, you can see that D1 looks cooked.
I'm resigned to buying another inverter, but, if anyone has any advice on repairing I'd appreciate it.
So I purchased a replacement inverter and the replacement doesn't work either. I can see problems with the replacement when comparing the two. In 1-IMG 0213, the original is on top and the replacement below. In the set of pads labeled CP1 CP2 CP3, there's a solder blob on CP1 of the replacement that isn't present on the original. What's the function of these pads? I was thinking of removing the solder blob from CP1, but there's another problem on the replacement board. In 1-IMG 217-001, you can see that D1 looks cooked.
I'm resigned to buying another inverter, but, if anyone has any advice on repairing I'd appreciate it.
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