So my aunt got this little ACER Mini-ITX pc that was not booting up. I looked at the capacitors and found some bulging 16V 220f electrolytic and I imidiately thought this will be an easy fix since all I have to do is replace those and it will be back to business. I had experience with this before with my AMD K6-2 mobo back in the day.
10 days later and I'm still stuck at figuring out what the heck is going on. Since I already replaced the suspected bad capacitors it still refuses to boot.
To the oven it is! I baked that sucker on a regular kitchen oven at 180 *C for 10 minutes. Cooled it down and hooked the ATX power plug and the powcer button connector. IT BOOTED UP!! So much for the excitement though because after shutting it down to insert the HDD and memory it was back to being dead.
Oven equals heat so I thought it boots when something is hot. My wife's trusty hair dryer came into play. Heated up the board entirely and when it was hot to the touch i plugged the mini board back with the ATX and power button connectors. You're right it came to life. Those beeps where beeps of joy. I diagnosed the problem and the next thing to do is to isolate the search for the failing component.
This time I wasn't sure yet what component needs to be hot so i took my soldering iron waited it to heat up just around 100 *C and started heating up the solid capacitors near the CPU by briefly touching it with the soldering tip. Those solid caps looks perfect from the outside and I don't have the proper equipment to test it inline the board.
Every time i heated a capacitor I then push the switch. Bingo! I found waldo. A solid, good looking filter capacitor was the criminal. You wouldn't even think it was bad. Next time i'm investing on proper tools but for now i got to use unorthodox methods for this job.
I had a 6.3v 1000uf low esr cap that i salvaged from a dead video card lying around so a quick work with the soldering iron is all needed. I decided that i'll skip removing the bad capacitor and instead rig the replacement cap with a wire that will run to the side because i'm afraid i'll damage those little components near the CPU. Ugly but works.
Walang komento:
Mag-post ng isang Komento