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Home▸ Forums▸ 68kMLA▸ LCIII restored - It's Alive! + Questions for uniserver and people that know stu
Post #7 by lopaka1998
Source Forum68kMLA
CategoryHardware
Post DateWed, 15 Apr 2015 - 07:34
Original URLhttps://68kmla.org/bb/threads/lciii-restored-its-alive-questions-for-uniserver-and-people-that-know-stuff.1748/
Post
That's the challenge!  Where??

Something is definitely shorted somewhere. Thing is - where?


Thank you Uniserver.  Really appreciated.  I tried cooking the board to remove any water left over - just in cse - but there was no change to the problem.  Interesting.  Most of my values were comparable to yours +- 0.10 volts.  Except C13 and C2 which both have a zero volt value. 

According to the schematic, they both connect to the sound chip - U1.  That may be the culprit.  There are caps/resistors/grounds inbetween though so I'm probing the traces looking for the problem.  If everything is connected up to U1, then U1 is probably to blame. The weird thing is that the audio works fine. 

I'll reply back in a day or so if I find anything.  If not, I'll have to get  a new heat gun as my last one broke due to a solder ball inbetween the microcontroller pins.  Then when I get it in, I'll remove U1 and see how the temps are on the cpu. 

Thanks you guys for all of your help.  After this, I'll owe you guys lunch.

Your probably just fine. 120f to 130f is fine anything above 110f will feel burning to your skin anyways.



c13
6.3v 100uf
2.18

c2
16v 10uf
4.01
mp.ls