Description:
Fixing electronic equipment.
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KIP 2900 - Anyone here repair these in the past and has info on them?
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Looking for the upgrade Eprom for the 2021 scanner to enable it to run with revision 5.5.x of the software on XP. This machine has a proprietary interface card (KIP6CP - which is a PCI card), so it is not running on SCSI or USB in case you are curious.
KIP says to contact my local dealer, and the dealer isn't interested in... more »
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Finding A Power Supply Schematic
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[This followup was posted to sci.electronics.repair and a copy was sent to the cited author.]
I am repairing an LCD monitor that has the very common turn on problems. This is an I-INC IF281D unit with model number showing as HSD1040. I am in the process of replacing all the capacitors on the PhiHong power... more »
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Magnavox ZV457MG9a problem
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The VCR side of my Magnavox ZV457MG9a now sounds like a person
snoring
when it plays or records a tape, anyone else have this problem?
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Alternistor = trade name for traic?
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No other difference? alternistor = triac ?
its just that a number of apparently unrelated companies use the term
alternistor for what otherwise seems to be traic
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Dell - A720/A920 black ink cartridge.
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Since I had a syringe of black printer ink that worked just fine on a Canon 250i, I decided to try filling the cartridge on my Dell A920.
Its gone from streaky printing - to printing completely blank pages.
Is this a problem of priming the nozzles - or incompatible inks gumming up the works?... more »
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Digistrobe from Power Instrumnts
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Looking for repair info. Like a schematic. The digitl display lights up but no strobe. Probably vintage about 1964. No other model number or S/N just Digistrobe.
Two circuit boards, one for the display and frequency cintrol.
Another board has the strobe lamp plugged into an octal socket and some trigger circuitry. Two bad electrolytic caps. Voltage doubler maybe. The unit was stored for about three years and the caps failed after storage. Maybe just old caps but maybe something more.... more »
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OTA broadcasts being phased out?
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I have heard from sources, (perhaps not reliable ones) that there has
been talk of phasing out OTA broadcasts in the United States.
Switching just about everything to UHF and making all our tuners
useless was bad enough but this would be the ultimate slap. Has anyone
heard anything to this effect? Lenny... more »
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TV antenna question
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My buddy doesn't have cable where he lives so I got him this antenna:
[link]
How do I hook it up to his TV?
He has a tube TV with a coaxial connector.
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Can a loose connection lead to a blown mains fuse?
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800 watt toroidal transformer operating at say 400 watts. Secondaries lead
to conventional bridge rectifier and smoothing caps for +/- rails. A break
appears in the DC rails central 0V return to the transformer, could that
lead to a blown mains fuse, via inductive action?
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