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| Author | mac II ci (Read 45601 times) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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madmann
256 MB  Posts: 284  
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on: February 13, 2007, 05:46
I had installed system 7.5.? on my ci before I moth balled the old girl. When I re commissioned her you can very faintly hear the sound. What do you think system 7.5 or mother board issue? Any testing ideas? I did work the speaker connection at the motherboard |
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dpaanlka
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1024 MB Posts: 1646
Reply #1 on: February 13, 2007, 07:36
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Have you turned the sound up?
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madmann
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256 MB Posts: 284
Reply #2 on: February 14, 2007, 01:33
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yes i did the normal things opened the sound control panel and increased it to max and made sure the internal speaker was selected. on max you could just detect the sound coming from the speaker
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dpaanlka
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1024 MB Posts: 1646
Reply #3 on: February 14, 2007, 01:45
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Have you tried plugging anything into the external port?
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wove
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1024 MB Posts: 1363
Reply #4 on: February 14, 2007, 03:08
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Quote from: "madmann" I had installed system 7.5.? on my ci before I moth balled the old girl. When I re commissioned her you can very faintly hear the sound. What do you think system 7.5 or mother board issue? Any testing ideas? I did work the speaker connection at the motherboard On older systems the default system sound values are held in the PRAM. I assume your battery is perhaps dead. You can reset the PRAM doing an option-command-P-R during startup. bill
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madmann
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256 MB Posts: 284
Reply #5 on: February 14, 2007, 04:11
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You know I was shocked that the time was only about hrs off and the date was correct when i started the the ci up. You are right I will zap the pr ram! good idea I should also rebuild the desk top. thanks bill michael
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madmann
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256 MB Posts: 284
Reply #6 on: February 15, 2007, 14:38
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well i tried some external speakeras and zap ed the pr ram it appears that one side of the stereo was very faint also. the pr ram did not help what do you think a mother board issue.
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wove
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1024 MB Posts: 1363
Reply #7 on: February 16, 2007, 01:53
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Old capacitors often fail and can be noticed because they "leak". You can inspect the mother board carefully to see if you notice any leakage around the capacitors. Capacitors that tend to lead look like very small cans with two wires holding them off the board. Because they have leaked does not necessarily mean they are totally not functioning. Often life of the components can be extended by removing the mother board and washing it thourghly. A cycle through the dishwasher with plain water is said to do an excellent job. Make sure it is dry before you reassemble the computer to see if cleaning worked. bill
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madmann
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256 MB Posts: 284
Reply #8 on: April 15, 2008, 23:50
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wove well i am back to the ci i have removed to mobo and can not see leaking the caps around the speaker area of the mobo are small can or hat looking caps. so do you remove any occilators before washing?
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wove
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1024 MB Posts: 1363
Reply #9 on: April 16, 2008, 03:27
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Quote from: "madmann" wove From what I have read you can just go ahead and wash it, but if I were looking at doing it, I would probably research the matter again. I do not think there is anything on a motherboard that is susceptible to water damage. At least not when it is removed and not powered. Please keep up posted about what you do and how it turns out. bill
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madmann
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256 MB Posts: 284
Reply #10 on: April 27, 2008, 03:36
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we it did not help still no sound also no video this may be an issue with the stupid mac svga adaptor. I will keep you posted. It looks like a white residue under some of the caps. I found a source for them so i may replace them. Component level repair wow! not bad for a ME
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madmann
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256 MB Posts: 284
Reply #11 on: February 08, 2014, 04:28
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wove are you still around ? I had some bad luck with my macs. I have been storing them and had some mice take up residence inside. the only machine it torques me off about is the 7100/80 with the g3 sonnet. so back to washin mobo. should I use the dry cycle ?
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wove
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1024 MB Posts: 1363
Reply #12 on: February 09, 2014, 17:57
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I would not use the dry cycle. Just let it air dry. I would let it set for a good bit, just to make sure everything is dry. Welcome back  bill
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madmann
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256 MB Posts: 284
Reply #13 on: February 10, 2014, 16:31
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Bill I got the modo washed and back together I started right up and woks great without the g3 sonnet when the sonnet is g3 400 is installed it frezes on startup when the sonnet extension is loading then no joy I did not wash the sonnet car. any ideas the machine ran in this config years ago so I am thinking the sonnet card died but want to explore that further I will put pds video back in the pds slot and make sure the video works which would sort of say it is not a modo issue. mac 7100 128 meg ram av video card system 7.6.1
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