repair

My grandfather gave me his old quadraphonic 8 track player and I recently took it to work to power a set of Kenwood 3 way floorstanders I found in an abandoned area of the building. When I hooked everything up it worked but sounded very quiet, then all of a sudden the right channel gets really...

Hey everyone! Hope you're all enjoying the holidays! I once again found myself in a repair pickle and asking for the sage wisdom of members much more experienced than myself. Recently re-capped a Yamaha CR-1020 for a friend and first I ran into the issue with the misprinted polarity sign on...

I bought this defective sony biotracer one ebay and it's completely unresponsive. I have been reading around a bit and it seems that it's most likely an ic that's broken. However before I go around and look for a replacement I would like to cross out all the other possible defects and confirm...

I just got a Pioneer SA-710 amp and after cleaning the pots, it tested perfectly. Unfortunately I didn't notice that the speaker wires were not inserted in the connector as far as they should have been, or the wire was stripped more than it should have been...in any event, the exposed wires...

Hi all it's my first post here and it's about my first purchased Hi-Fi amp on this audio journey. It's a Sony TA-F222ESA (aka 570ES in the west) and I admire it being a little beast with 100W @ 6 ohms with a very clear and neutral output. However the topic at hand is I'm experiencing a hissing...

Hello everyone, happy holidays This year I really embraced the electronics repair hobby. I particularly enjoy trying to repair audio equipment, receivers, cassette players and speakers so far. I've had relative success with some receiver and integrated amps that needed basic service of cleaning...

I have a pair of The New Advent Loudspeakers which I probably bought in the 1970s. I refoamed them once about 15 years ago. One has gone out, and I suspect the problem is that the nut in the back that holds the speaker wire connection has gone loose. The little sharp pointed holder for the nut...

Anybody have any experience or info one this thing? I know its not a great table but I picked it up for 5 bucks so i could have a system in my office. Fixed the idle, put the belt back on the casette deck, cleaned the 8 track head, and well cleaned everything lol and its running great. only...

Hi all, long time reader, first time poster. I have a Pioneer PL-540 that I picked up for cheap a while ago, hoping I could nurse it back to health. The motor works, but the speed isn't right. Auto-return and bearings are fine. There are also some cosmetic issues: a broken tonearm rest, a burnt...

While searching for a replacement type for the transistors TR527/528 -> 2SC1913 and TR529/TR530 -> 2SA913 I found the following transistors as comparison type: 2SC1913 --> 2SC5171 (obsolet) --> 2SC4883 or 2SC4883A (digi-key) 2SA913 --> 2SA1930 (obsolet) --> 2SA1859 or 2SA1859A (digi-key) I...

Greetings, I have a pair of SR5s and SR30s with the SRD6 and SRD4 energizers, respectively. I haven't used them for the last six months. Today I tried them both and, conincidentally, they both failed. I tried them with three different powers amps from 40W to 70W; the latter was able to get...

Hello all! I am working on the blow microphone for a friend. Hooking it up it doesn't produce any sound thru his mixer/amp setup. (See mic below) I am an automation engineer by training but I don't have very much experience with audio equipment. I assume that older microphones like this are...

Hi gents, Apologies if this is not the right sub-forum, as you can guess by my post count I'm a completely new member to the forum! I'll cut to the chase - about a year and a half ago I bought a Sony STR-6036 amplifier. It came in really good condition, the bulbs are working, all the channels...

Hi Everyone. I am learning from all of You from some time but this is my first post. I have stumbled upon a problem for which I did not found an answer. I am during restoration of Hitachi HA-5300 and the mentioned speakers relay is in quite bad state (see the attached photos) it don't even have...

I see a lot of requests from new cassette enthusiasts on how to repair tape decks. So I thought it might be a good idea to create a thread to consolidate a knowledge base. I do know something on cassette decks, but by no means a lot. These are complex electro-mechanical devices and you really...

I picked up a pair of Atom V2 for 20$ CAD on monday and I thought it was a steal but after hooking them up I was really disappointed with their sound. I also heard some weird noise coming from them so I decided to open them, and surprise, they need refoam. I've done refoam in the past and for...

I have a Yamaha A-1020 standing here, which has a phenomenon that I have not seen before. When you turn it on everything is normal. The relay switches after 3-5 seconds and you think you can use it. Unfortunately it is not so. In the left channel there is a fluctuating voltage at the box...

Hello, Still a beginner but this time trying to understand speakers and see if I can improve any of them. I have a pair of Wharfes that I got for 5 bucks and they sound great but I was wondering if these look fine or if something is missing or needs replacing. I would also love a description of...

I used a phono cable with connectors on both sides. So I had to take of the connectors on one side to solder it to the record player. I am not the best at soldering but it wasn't shorting or anything. Any one know why this ? I assume it's bad solder joints maybe ?

I found what parts I need using the a service manual, however I can't seem to find the parts Ineed even with the model numbers etc. Any tips? Parts I needare listed below.

The auto return does work but with normal play the arm mechanism doesn't reach back far enough for it to trigger the auto return. Is there anyway to recalibrate this ?

I picked up a cheap VIZ WR-550B function generator so i can learn to use one properly. I hooked it up to my scope and noticed some distortion on the output that I would like to eliminate if possible. My primary concern is the distorted shape of the sine wave and the two ripples at 1 MHz -...

Hi all, Working on my Audion MX960 it came to me that I had no proper Jig to rest my TT upside down on. Does anyone has a nice TT Jig made up, he or she can show?

I have a pair of Dahlquist DQM-9 Compact tweeters that have pushed in cones for over 15 years. I totally neglected them, and apologize to all. One was rather mangled with a dent that actually was more of a folding over, and very irregular. It was as bad as anything I could describe. No...

Hi guys, This is my first post here. Recently I got Sony TC-K60 for less then I spend on coffee. Cosmetically in good shape, LCD looks good, but unfortunately belts are shot, 2 out of 3 are stretch. So I wondering if anyone know dimensions of belts. > I was able to remove one without much...