Electronics Repair

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Need help diagnosing laser printer

I have an HP Laserjet 4MP. Something went haywire in the toner cartridge and dumped toner. I cleaned it out and replace...
5 comments posted 9yrs
posted by ham789
5 comments posted 9yrs posted by ham789

SMPS inductor clone

OK, so I want to clone this inductor, L9. http://elektrotanya.com/digipro_1000_sch_pcb.pdf/download.html It is wound on...
8 comments posted 10yrs
posted by soundserviceleeds
8 comments posted 10yrs posted by soundserviceleeds

Mark Bass amps

I assume this will become a generic problem as they age. A dropper in the fan supply line is R67 of value 150R, barely...
7 comments posted 10yrs
posted by diverse
7 comments posted 10yrs posted by diverse

Black mica?

Anyone ever seen this before? Basically clear mica but with black smokey looking intrusions, something geological in the...
7 comments posted 10yrs
posted by diverse
7 comments posted 10yrs posted by diverse

Anchor Ensign Podium With Mic and Amp

I am trying to help a friend of mine fix the electronic podium for his chur ch. It worked fine for years til they broug...
0 comments posted 10yrs
posted by lovguitar
0 comments posted 10yrs posted by lovguitar

BS 1363 plug on a two conductor cord of a lamp.

Hi, Does installation of a BS 1363 plug, with a ground pin, on a two conductor cord of a table lamp, violate wiring reg...
12 comments posted 10yrs
posted by petereasthope
12 comments posted 10yrs posted by petereasthope

Roomba lawn mower

Roomba now also has a mop. How long until they come out with a lawn mower? Yes, I've seen the video of a Roomba finding...
23 comments posted 10yrs
posted by vjp2.at
23 comments posted 10yrs posted by vjp2.at

Tree pruning laser?

They want ten grand to chop the tops of three pines, so I got to (uh oh) thinking what if I could put a laser on a dron...
14 comments posted 10yrs
posted by vjp2.at
14 comments posted 10yrs posted by vjp2.at

Cambridge A5 amp crowbarring?

Headscratching time. On first receipt tried the amp out as owner had been using 1 channel only , after having blown the...
5 comments posted 10yrs
posted by diverse
5 comments posted 10yrs posted by diverse

ML-1610 lost its way

After a period of non-use I pulled my Samsung ML-1610 back into service, an d put in a new cartridge (since then I've p...
2 comments posted 10yrs
posted by ephraim.becker
2 comments posted 10yrs posted by ephraim.becker

washing machine pump motor

There was a discussion a LONG time ago about a washing machine pump motor. I have a Kenmore Oasis washing machine that...
8 comments posted 10yrs
posted by elson
8 comments posted 10yrs posted by elson

Sanken SAP15 , 5 pin Darlingtons

With the built in temp comp diodes, 1 silicon in the N type and 5 Schotky in the P and mirror-reversed pinning . Owner...
4 comments posted 10yrs
posted by diverse
4 comments posted 10yrs posted by diverse