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Hoping for some enlightenment. If the distance between pins on trim pot data sheets exists, I cannot comprehend it. Other than being 1K ohm and 1/4 watt, I am at a loss to pick one. I removed an original that is suspect so as I could measure distances between pins but so far, I cannot see...

I am at the tail end of a small project. I replaced two relays and all electrolytic capacitors (100uF and smaller) in a Sanyo 100 watt MOSFET amplifier. The service manual describes an adjustment proceedure that calls for a 100 watt 8 ohm resistor across + and - speaker terminals. The...

The unit is a Sanyo Plus P55 power amp. I have been reviewing capacitors contained in the parts list and found what I think is a descrepancy. The capacitors at positions C723 & C724 are described as 150V - 0.047uF - electrolytic. Was there ever such a thing as a 150 volt 0.047uf...

The fellow’s name was Nick Sieflow. I learned of this yesterday. I engaged in numerous dealings with Nick, including buying a Thorens TD124 from him several years ago. But buyers remorse set in so I took it back to his shop in 2021 for consignment sale. As far as I knew it had not sold...

Does anyone know much about selenium rectifiers? Last fall, I mentioned in a different thread about having an RCA 9Y5. I've replaced quite few components inside but in the process, I suspect the selenium rectifier has failed - as in dropping voltage. The dial lamp now dims almost immediately...

Within the past week I decided to use a (built by someone from a kit) Hafler DH101 preamp that's been more or less idle for some time. I've had it well over ten years and during that time have replaced all the electrolytic capacitors, RCA jacks and the strips the jacks mount to. The times I...

I am hoping someone can provide insight into this. I have replaced lamp bulbs before and it was a fairly cut and dried process. Yesterday I visited someone who recently purchased a record store. Because I got some of her 2nd hand vintage turntables to work, she handed me a Pioneer SA700 II...

Just an observation. I ordered some parts, including resistors, for an RCA 9Y5 record player radio combo that was made in 1949. I found the physical size difference between the old resistors compared with the new ones startling. Resistors seem to be smaller even than they were just a couple...

A long winded story but since there are forum members in BC, I thought this might be to their benefit. The business, Vancouver Audio Speaker Clinic, was the go to place for speaker repair since the mid 1970's. I was aware of them for many years but first set foot in their door ten or twelve...

It's an out of curiosity question. There are a dozen (X)PL909 transistors in a bag that I saved after removal from my 700B. I have no intention of using them but I checked them with one of those cheap Chinese component testers. All of the transistors were identified as BJT - NPN so I assume...

I have one of those decks and posted here about it’s motor not too long ago. After installing it, I’ve encountered a couple of problems. Having a legible schematic might help me out. The one on HIFi Engine is too low rez for me to see when zooming in. It there is someone here that has a...

This is in addition to my thread on "creating" a resistor for the Akai AA1010 I was reluctant to admit having. I got hold of the proper resistors so that's done. I now know that the NPN of a pair of driver transitors is shot. My intention is replacing the NPN and it's companion PNP. I...

I am in need of a 10 ohm resistor of at least 1/2 watt and the only 10 ohm resistors I have are 1/4 watt metal film. The nearest "local" business that might have such a thing is over an hour round trip. Like about 100km. If that doesn't pan out, can I solder two resistors in parallel then...

I posted this on AK but thought I'd do so here as well in case Sam or another cassette deck aficionado catches it and cares to comment. Last winter, while walking my dog, I saw a Yamaha receiver, speakers and this Pioneer CT-F2121 at a curbside. When I got back home, I took the car and picked...

Many things recently have been making me recall tunes from days past. What's been happening to Ukraine has been bringing this one to mind. Inspired by a different war, but a war is a war. Consequences and suffering are the same regardless of when or where. The song used to give me...

It’s Friday. On Wednesday I placed a small order with Mouser. It arrived this morning. From Mansfield, TX to Castlegar, BC in way less than 48 hours. A 2000mi cross border trip.

The past few weeks I've been picking away at trouble shooting a free NAD 7225pe receiver, using the primitive means at my disposal. I have been pulling transistors to check them and suspected that two I removed were actually installed backwards. It was very time consuming (for me anyway)...

If I may pick a brain or three, This might be a basic "Electronics 101" question and the component make/modle may be irrelevant. I've spent some time dabbling inside a free NAD 7225PE receiver. The power amp section has a problem. Both channels work and the volume it produces is equal on...

In particular, a replacement for the pilot lamp in a Realistic QA-680 four channel integrated. It's fed from the rail voltage which I measured at ~42 volts. It's not my amp, I just offered to check it out for someone and fix if possible. None of the parts vendors I've checked so far has...

LL meaning low loss or low leakage I believe? Can a modern general purpose be sufficient to replace an LL electrolytic from the mid 1970's? The chore at hand is not mine, it's an aquiantance's. An Akai GX-630D open reel deck with a playback problem that has (soon to be had) a raft of 2SC458...