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Sansui AU-9500 – Distortion in Right Channel (Need Advice)
Hi everyone, I’m working on a Sansui AU-9500 and could use some advice. Background / What I’ve done so far: I bought this amp with only one working channel. On the right channel power amp board, I found: Burned resistors Two bad transistors One shorted output transistor I replaced all the...- Photoshark88
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- distorion issue sansui au-9500
- Replies: 27
- Forum: Exclusively Sansui
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Elac Miracord 50H: repeats last record on 7" record play only
My Miracord 50H is exhibiting a new problem, and I'm wondering if anyone here has encountered this and knows what might be causing it. I've tried looking through the service manual and I'm not sure I understand what might be the problem, and I haven't seen the same issue posted on AK when...- Stack
- Thread
- 50h elac issue miracord repeat
- Replies: 1
- Forum: Turntables
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Slightly Skewed Cantilever on NEW 2M Bronze Stylus (and more)
i know there are a few threads pertaining to similar situations, of which i have read many, but this particular replacement stylus is brand new whereas most ive seen mentioned in these threads were purchased used. ive aligned the cart relative to the cantilever as opposed to the cart body and...- atomvinter
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- 2m bronze cantilever effective mass issue off center cantilever ortofon output amplitude skewed
- Replies: 49
- Forum: Turntables
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Scott A437 Strange noise in both speaker
My Scott A437 amplifier makes a strange noise on both speakers when turning on. After that, it works correctly. Could you also help me with the Bias adjustment? Where should I place the probes and which resistor should I adjust to get 5mV? Thank you very much for your help- Radas
- Thread
- a437 amplifier fix issue scott
- Replies: 2
- Forum: Solid State
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An electric clicky sound, Nakamichi CD player won't turn on
I've just done a classic repair of replacing the belts on my Nakamichi MB-3 and everything works but a new problem arose. When I power it on, the relay sends electric surges in an attempt to start the CD player to no avail (you can see the electricity between the board and film that's zip-tied...- Virus
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- cd player fix help issue nakamiachi power repair
- Replies: 0
- Forum: Digital Sources
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30V-45V AC on Speaker Terminals (KA-2000A)
Goooooooood evening my friends! This is my first post, I promise I scoured for info before making it. I have just pulled apart and put back together a Kenwood KA-2000A which I'm gifting to a mate. I never really used it, and suspected it had an issue tripping the houses RCD when connected...- Birdpirch
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- diagnosis fault help issue noob
- Replies: 8
- Forum: Solid State
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Technics PG440 - light blue gunk inside
I am not the best with electronics so pardon my inexperience. I recently obtained a Technics CD player which was used in the music room of a retirement home for a couple years. It powers up, the laser moves, but it does not detect any discs, no spinning. Inside the dock, there's this blue gunk...- salafaster12
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- blue cd gel gunk issue liquid problem substance technics
- Replies: 1
- Forum: Digital Sources
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Yamaha NS-670 woofer repair help needed
Hi, Long story short I got scamed by seller. And now he won't admit that he has hidden this issue. He says that I have damaged the woofer. I was doing 10wpc tops and it's first time I've heard that you can damage woofer by decentralising it with proper usage. Everything looks fine with this... -
Luxman L-100 woes
I have owned this Luxman L-100U for about two years now and it seems this unit has been nothing but constant trouble. I know it was serviced before I purchased it and it immediately had problems. I decided to have it serviced by a long time professional and he claimed the last Tech did him no...- SingleReel
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- issue luxman noise repair service
- Replies: 72
- Forum: Solid State
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(AVR) No L/R sound until quick rise in volume level
Hi! Hoping you all can help me with an AVR issue. Yamaha A-800 for reference. When powering the unit on, I get either one channel or no channels producing sound until I raise the volume sharply and to a high level. Then both channels will act normally and adjust with the volume normally. It...- canders7
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- issue receiver yamaha
- Replies: 4
- Forum: Home Theater & Video
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Left Reel Lock-Up on my Sony TC-366
I have a sony tc-366 reel to reel machine that I use occasionally to listen to music. Today, after doing so, the machine stopped spinning the reels. I took the cover off and discovered that everything worked fine, the right reel and motors all spun okay, but the left wheel was extremely locked... -
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Weird SL-1200 Anti-Skate Issue
Hey, guys. I have a Technics SL-1200MK2 and the anti-skate control is acting up really strangely. It seems to function properly, i.e. turning the knob will impart some movement on the tonearm when floating, but any time I turn it above 2 or so, it turns itself back down to a lower number. It...- collinjstep
- Thread
- anti-skate issue sl-1200 mk2 technics
- Replies: 4
- Forum: Turntables
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JVC L-A55 tonearm resistance issue
I've got a JVC L-A55 table in the shop right now, and this thing has me stumped. When I first began messing with this table there was so much resistance in the first quarter of the tonearm's arc, that it wouldn't move at all under normal operation. I've re-lubed the auto return mechanism...- Pioneerlyfe
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- automatic direct drive issue jvc l-a55 resistance skipping turntable
- Replies: 5
- Forum: DIY
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Fisher E44 Turntable + Console Phono Thud/Rumble Help
Hi all, I bought a Fisher E44 console with built in turntable at a vintage store. My issue is a low frequency thud/rumble coming from the sub woofers, maybe 5-10Hz bass rumble. I have tried the following to troubleshoot this issue: - My setup consists of a built-in turntable, a preamp/tuner...- dplatner
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- e44 fisher issue pre amp rumble troubleshoot tube amp turn table
- Replies: 2
- Forum: Tube Audio
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Technics SL-QD33 cueing speed issue
Hiya Just recently bought sl-qd33 and I've noticed an issue that cueing mechanism is not working correctly. The arm rises after bressing the start button and goes into right position but it takes about 30-40 seconds for it to fall onto the record. The correct way should take about 5-6 seconds to...- Guchy
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- cueing issue sl-qd33 technics turntable
- Replies: 1
- Forum: Turntables
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Pioneer SX-50 suddenly very unstable, going in and out of protection mode.
My SX-50 has suddenly started acting really weird. This afternoon, I turned on the stereo, and the relay took around 10 seconds to click on. About 5 seconds longer than usual. I hit the speaker A switch, and was greeted with loud, scary pops through my speakers as the relay started clicking off... -
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Pioneer m90 Protection/power indicator
Hey im new here first time. Living in the netherlands First of all very happy with my pioneer m90 with sonus faber consertos but to my issue here first of all i when i notice the protection/power protection power indicator wont lid this is my method of connection connected to Line direct ->...- Unseenlegend
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- issue pioneer pioneer m-90 power amp power indicator protection protection/power indicator
- Replies: 5
- Forum: Solid State
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1983 Pioneer SX-50 just went CRAZY! Please help?
Before I begin, here's a little backstory to this beautiful stereo of mine. It's almost 40 years old now, and has never been re-capped, all original parts. But it's been working beautifully for the few months I've had it so far. Recently, there's been an issue where the stereo would lose power...- Saffire
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- help issue pioneer question troubleshooting
- Replies: 5
- Forum: General Audio Discussion
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Help diagnose: Low volume on front channels
Hi everyone. received a faulty Sony STR-DE598. As title says, front channels volume is lower (possible more tinny too, not sure) then it should be by quite a lot (still very audible at max volume). Rear channels and Center are all fine, very good volume at mid volume. It's not a settings...- Yossi_s1
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- issue low volume weak
- Replies: 0
- Forum: Solid State
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Kenwood KA-5500 left channel repair
Hello from Estonia! Hope you are all well. Got my hands on this really sweet '77 year Kenwood amp. Unfortunately left channel is dead. I really like this amp, so I would like to repair and restore it. Hopefully you can give some little guidance needed to bring this amp back to life. Before I...- Taavip
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- bias channel dc offset issue kenwood repair transistors
- Replies: 16
- Forum: Kenwood-Trio/Kensonic-Accuphase
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CR-820 Power Issue
I haven't been able to find a good schematic that has voltages on it for this unit. I am assuming that the transformer is suspect. I have 121VAC between the brown and gray wires which Ii assume are the inputs to the transformer. On the output side I have 2 red, 2 orange, a black, and a blue... -
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Weird recurring problem
Wonder if anyone knows what might be causing this. I've got a problem with the bass dropping out in the right channel. Only happens when listening to records so I don't think it's the amp or speakers. Turntable is a vintage Rega Planar 2 with an Audio Origami rewired Rb250, Shelter 201...- Depthgrammar
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- bass issue phono phono cartridge rega troubleshooting turntable
- Replies: 35
- Forum: Turntables
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Pioneer SA-9100 volume potentiometer issues
Hi! I've read several posts on this, but i do not want to hijack an old thread. I have a SA-9100 that worked great until i wanted to clean the front panel, in doing so the volume knob was really stuck on the potentiometer shaft so when i pulled it off it must have been damaged in some way...- barbazoo
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- issue potentiometer problem repair help sa-9100 sweden volume
- Replies: 0
- Forum: Pioneer Audio
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Technics SL-V5 Output issue
Hi the AK community , i'm joining you with a really good Technics SL-V5 , in an amazing condition. But once arrived at home, after setting it ; just realised that the Right Channel Output is weak. The Left one is amazing, by the way. I tried to find the manual to follow some instructions in a...- SamfoxR
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- channel issue output technics sl-v5
- Replies: 3
- Forum: Turntables
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Issue with binding post terminal
I have a pair of Audioengine P4 (passive speakers) I use in a spare room. I have an issue where one of the speakers goes in and out. To get it to work again, I have to press on the binding post terminal. It sometimes will work for a few minutes until it goes out again. Sometimes I’d have to...
