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9100Bs freshly acquired, weird variations
02-28-2019, 02:05 AM (This post was last modified: 02-28-2019 02:07 AM by tubenewb.)
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tubenewb Offline
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RE: 9100Bs freshly acquired, weird variations
(02-27-2019 07:30 PM)teenix Wrote:  Probably wise to be careful poking around in there too. The cathode ray tube operates from very high voltage (around 3500V), not to mention the mains power. Both will be nasty to the unwary. Some capacitors may remain charged at a high voltage even after power off.

Thanks for looking out, Tony. I was splitting apart old all-in-one Macs (Plus, SE, etc.) when they were still in use and VERY conscious of the charges on those CRTs and related caps. Smile

FWIW, here's a photo of the work the last crew did that didn't seem to fix the problem. (that TI in place of the germanium)


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RE: 9100Bs freshly acquired, weird variations - tubenewb - 02-28-2019 02:05 AM



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