Recent content by mainmacman

any update here?

What fuse are you referencing ?

any update here?

any update here?

I will ask the customer if they approve, very strange I have 2 of these iMacs in the shop with similar problems....

Curious if the power supply fixed this unit?

Duke, trying to catch up to have some time to work on the board, just got the Weller hot air station... more soon I hope

I am newb. Have Microscope,US cleaner and getting Lous's Hot air gun I hope tomorrow. Anyway, I have 2 of these boards and business is slow on the break fix side so I am teaching myself troubleshooting with all your help, Well, mostly Duke in the past. I figured since there was no power to...

Purchased the newer Crest today off your site. Waiting patiently to find out what Hot air station is preferred.

"What should be correct voltages on U1950.? "

installed board into chassis, connected speakers. with AC adapter plugged in fan spins automatically normal speed, when I do connect the AC adapter the fan automatically spins without hitting power key. With Apple external keyboard and Apple mouse connected on both left and right side no mouse...

Yes, Mouse does light on both USB ports. Board stays on, does not turn on/off 3x. looking forward to review of worthy hot air station, tried to purchase Crest cleaner however site states still out of stock.

I am curious, it appears that many of the Main Logics have the same power circuitry. Is there a defined efficient way to check in order power rails quickly to determine what exactly is missing? On U1950 on this board after looking at the logic breakdown of the chip and then looking at...

Thank you for your help...

on L7310 I get 1.698V. U1950 does not look corroded. C1950 and R1960 when checking crumbled to dust. next up will try and find a donor board with similar components. At the risk of sounding stupid, do they need to be exact replacements? what is the most efficient way to find these parts on...