Re: iMac G5 AcBel 17" API3PC94-290 no voltages

OK , I got the 24v regulator from local shop and replaced it. Job is done. Thanks again for your help.

Re: iMac G5 AcBel 17" API3PC94-290 no voltages

Thank you for helping me firstly. secondly, I took M6 out it checked the legs on the board without M6 presence it has 32 volt between input and output. (it was not showing anything last time I checked when M6 was in place. Also when I checked with my mutimeter in diod testing mode, M6 shows 42 ohm between input and output BOTH WAYS (switched plus and minus probes) versus a good KA78M15 I had here handy (i know the rating is different and I am not going to use this for my board!) that shows current only in one direction doing the...

Re: iMac G5 AcBel 17" API3PC94-290 no voltages

Thanks for quick response, I checked Q1, visual check on that shows no sign of burning out. I checked BCE: no voltage!! I checked TOP244Y MOSFET. Drain is good. it was plugged for just a minute for this test. I checked Source and Drain put my voltmeter on 600 DC and it was showing about 330! BTW I am not that expert but not a newbie - just thought I should mention this at this point I disconnected the power and touched the copper heatsink attached to TOP244Y. It was HOT. I feel like it should not be that HOT specially when there...

Re: iMac G5 AcBel 17" API3PC94-290 no voltages

Hello I know this is an old post but Just wondering if you have any result on this model I have the same model same problem. replaced caps with new but still LED 1 on my mac goes off for a split second and no 24v at all. Could you please let me and others know what happened with your PSU? Thanks

Re: Delta DPS-800GB Power Supply No Power

Could you elaborate a little bit more on the exact location of those caps or maybe provide on-board cap number? I am attempting to fix two of these and im half way through it. Thanks

Re: Viewsonic Optiquest Q19wb

Hey guys, I had the same issue and it turned our that the whole reason for this problem was a weak CCFL. I figured over a period of time the lamp gets weaker and weaker in handling the job and there is absolutely nothing wrong with the PCB (At least for 2 Second to blank problem on Viewsonics!). so first consider the age of your Viewsonic monitor and next swap the LCD screen with a good one and you'll see that it works fine with the PCB you were suspicious of malfunctioning. What I did was to swap the weakened CCFL LCD screen with another monitor of...