problem

Hi Guys I have a marantz 4400, and the scope never worked. The fuse always blew when 4400 turned on. After some help from AK members, I found the problem, a carbon track on a black power supply plug (pictured). I removed the carbon track, and reinstal the plug. Now, i install a new the fuse and...

Hey! I need some help with fixing my Sony TC-366 reel to reel machine. It works perfectly fine at 1 7/8 & 3 3/4 IPS but won't play at 7 1/2 IPS anymore. I opened the deck and can see that the idler wheel won't turn at 7 1/2 IPS. I tried pushing it up a little bit with a screwdriver which makes...

I am facing an issue with my turntable. It seams that the headshell is not fucntioning properly. I only get left channel audio and I get a low hum from the other side. If I touch the wires attached to the headshell going to the right channel then they are very touchy, sometimes they stop humming...

Every time I start to get louder I hear some distortion (at least I think definitely some fuzziness for the lack of a better word) from my speakers. I’ve got a Marantz 2230 and KLH 6s. I had the same problem with a previous receiver making me think it’s the speakers. Are they being over powered...

I've just picked up a Fisher FM-100-B tube tuner and it's a nice looking piece of equipment. I am pairing it with an X-100B integrated amplifier (and some Tekton Lore speakers). Cincinnati is lucky to have a good classical station, two stations which between them maybe equal ONE occasionally...

I am trying to build a kit AM/FM radio and I have run into something strange after completing the amplifier section. The output wave form is not symmetrical. It doesn't look like clipping to me either. It looks like the push/pull transistors don't have enough current to complete the wave...

I would like some help troubleshooting my Pioneer VSX-4900S A/V receiver from 1991, please. I currently have it hooked up to bookshelf monitors. When I try to play standard stereo, no sound comes out. The only way I can get sound is by turning on Simulated Surround or Simulated Studio. and that...

Salutations, Sansui specialists! I am in need of your input on a problem with my 990DB and its FM tuner. I got this unit from my aunt, who rescued it from her neighbor’s garbage (fifty lashes on the backside for throwing a Sansui out!!). After replacing the fusible resistors on the driver board...

We sell a lot of vintage cassette decks here and I'm in charge of restoring them and keeping them on the shelves and not in the back room. I've done many since I started here and for some reason there's been a craze amongst old timers and hipsters all coming in for some classic analog decks...

i recently found a Sony K707ES deck at the thrift. I will need to get a belt kit for it, but I’m using a rubber band for the Capstan motor. The only thing is the door doesn’t always open. When that happens, I can hear it trying and it tries for longer than if the door opens. I don’t think it had...

My Pioneer CT-F950 is not recording properly on the Left channel. The recorded level of the left channel is significantly less than that of the right. I think I have traced the problem to the bias amp. I determined that the recording signal is good (balanced on all tape types and across many...

I have two Klipsch speakers connected to a Sansui Amplifier. Why does only one of my speakers very, very badly distort when the bass comes in a song? It's really bad distortion. I've checked the wiring and made sure everything was good, and I don't see any other visible problems. Thanks for the...

My Pioneer CT-F950 has developed a problem when recording onto chrome (CrO2) tapes and with the tape selection switch set to chrome. The recorded level on the left channel is significantly less (about half) than the recorded level on the right channel. The problem does not occur with metal...

Hello, it has been a while since I have last been here - almost 4 years now. Recently I picked up this Sony TC-K61 casettedeck in not working order for 10 euro's, claiming it won't play. Probably needs new belts I thought, worth the try for a decent 1980s deck. Getting it home and opening it...

Hey folks, I am in a quandary and have no where else to turn and hope the brain trust here can help me. I recently reached out tothe audiokarma intelligentsia when I re-entered the vintage audio market. I purchased a Luxman R-115R and a pair of Paradigm Me7 Mk 3 speakers -and life was beautiful...

So my father has this old AIWA AD-F850 tape deck which has been on storage for years (dry storage in good conditions) because a tape got stuck inside and he couldn't get the door to open to recover it. Recently I tried opening it and managed to get the tape out (it was locked in because...

Hi, all! As you've probably guessed, I'm having a problem with my ADC Sound Shaper One Ten Mk. II. As of a few days ago, I had replaced five capacitors on the unit, and I thought that fixed my issue, but, alas, it is still giving me problems. When you turn the equalizer on, everything seems to...

Hi, all! I have previously posted about some issues I have been having with my Marantz SD 9000. I have replaced the notoriously bad optocouplers, and all belts and idler tires. What I neglected to notice were the burnt out resistors on the PK21 board of the machine. I purchased and replaced...

Hi, all! I have previously posted about some issues I have been having with my Marantz SD 9000. I have replaced the notoriously bad optocouplers, and all belts and idler tires. What I neglected to notice were the burnt out resistors on the PK21 board of the machine. I purchased and replaced...

I have a set of early A/D/S L710s. Cloth grills, square corners, no fuses on backs, screw terminals. They have foam surrounds and look to have been refoamed pretty recently. One speaker sounds amazing just as it should. The other seems to be lacking bass. The woofers are both putting out sound...

Hi, all! I have recently purchased a non-functioning Marantz SD 9000 Compudeck, with the knowledge that the optocouplers would have to be replaced. After following this tutorial exactly and purchasing the optocouplers, belts, and idler tires it mentions, I am still unable to play tapes. Upon...

Hi, all! I have recently purchased a non-functioning Marantz SD 9000 Compudeck, with the knowledge that the optocouplers would have to be replaced. After following this tutorial exactly (http://www.vintagesilversmith.com/Marantz/SD9000/repair/sd9000_fix.html) and purchasing the optocouplers...

I'm working on fixing up my dad's old Sanyo Q40 TT. He's taken excellent care of it, so most of the mechanism is working very smoothly, however, when the auto-return function is triggered, the platter doesn't stop spinning after the arm returns. If I then manually pick up the arm move it off the...

So today i purchased my first vintage stereo system, which consists of a panasonic su-2800 amplifier, panasonic st-2800L tuner, panasonic SL-H304 turntable, two panasonic 635 cassette decks and a pair of wharfdale laser 20 speakers. The problem im having is that one of the cassette decks wont...

The following instructions describe how to solve display instability (mode flicker) and clock speed accuracy problems that can occur with Pioneer DT series timers. These problems are due to failing internal resistors of the MN6076 clock chip. The solution is to add four 10K Ohm 1/8 Watt...