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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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APC hums (buzzes) when hair dryer is run in another room
We live in an 80+ year old house with wiring of similar vintage (I assume).
All the computers are on UPS devices. My main computer is on an APC Back-UPS Pro 1000 with fresh batteries, which is certainly powerful enough to handle what's plugged into it. I will say that because there are no grounded outlets in this house (except for one in the kitchen), the APC unit's three-prong plug gets its 100v juice thanks to an adapter that ignores the ground prong. My stepdaughter runs a blow dryer in her room and when she does, my APC unit makes a humming buzz sound for as long as the dryer is on. The unit never beeps (as it does when there's an outage or dip in power) - it just makes this buzzing humm. Aside from whatever might be said of the lack of grounding (which cannot be helped), is this buzz indicating that any damage to the computer could be occurring? Thanks, Be |
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