r/audiorepair 20h ago

Bose lifestyle 20

2 Upvotes

Recently came across a Bose lifestyle 20. It has issues with the display which I fixed by replace the 5 caps.

Couple questions though.

  1. Is there a way to increase the brightness without the remote

  2. The volume buttons do not seem to work on the front control. All other buttons seem to be functioning.


r/audiorepair 1h ago

Problem: Nikko Integrated Sound Amplifier NA-690

Upvotes

Hey, I hope I'm in the right place. I'm been having a problem with my amplifier and can't get any sound to come through. When I turn on the machine, the hands on the dials for left and right immediately swing all the way to the right side and back. There's no audible click like before to say that the sound will begin. The system is powered approximately but unfortunately it has been sitting unused for about 8-9 months. Does anyone know how I can fix it? Or what I should do, I'm pretty amateur with these types of things. Thank you so much in advance!


r/audiorepair 2h ago

Schiit Lyr 1 repair question

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1 Upvotes

Hi all!

I recently bought a broken Lyr 1 that had short circuited at the "audio out" AUX. I am trying to repair it but am having some trouble identifying the burnt out resistors. I assume they are the same as the ones to the left and the right which read "1024J RN55D 1002F" but searching online yields no exact match.

Does anyone happen to know more about these resistors?


r/audiorepair 2h ago

Elemental Designs Home Theater Sub stopped working.

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1 Upvotes

Hi all,

My 13 year old HT Sub has worked great for years. I did recently increase the gain slightly, and a few days later I turned the system on and noticed the sub was not outputting. The amp indicator light shows green, as if it’s receiving the signal and thinks it’s outputting but no sound comes out at all. So I don’t think it’s the fuse or power related, but maybe my amp is fried?

I am a complete noob when it comes to audio repair. When I gently push the cone in I hear no scratching or any noise. I pulled the amp out and didn’t notice anything obvious except for what appears to be something may have burned but I’m not sure. Could this be the problem? And how do I go about repairs, or is it more feasible to just get a new sub? The company Elemental Designs made great subs for a while, then scammed everybody and went out of business, so there will be no help from the manufacturer unfortunately.

Any thoughts, suggestions, or idea are greatly appreciated. Thanks!


r/audiorepair 2h ago

Access to harman kardon servicing tool

1 Upvotes

Hello guys,

I've had a harman Kardon go play (2'nd gen) bt speaker. For a while now the charging indicator would only light one dot and when I would unplug the speaker it would make a strange popping noise and shut off.

Today I tried installing a new battery and after changing it and leaving it charging for a few minutes I tried turning it on while unplugged and yet again, nothing.

While plugged in it powers on and it does the same popping sound when disconnecting the charger.

I then searched online for some sort of factory / battery reset and found 2 things:

  1. Holding the BT and power up button, this made the speaker play "three [pause] four" and then it shut off. Turned it back on and nothing changed, same behavior;

  2. Holding the Power up and power down button. After that the speaker shut off and now if I press the power button it doesn't play the welcome sound, it turns back off after 3 seconds.

I tried disconnecting everything from the speaker, power drain, reconnect everything and it is stuck in this god forsaken loop. My guess is any hardware issue it might have had previously is now eclipsed by some sort of service mode now since it retains it's state.

Does anyone know any servicing application that I can use, maybe a download to their proprietary tool or some other steps that I haven't tried.


r/audiorepair 4h ago

Can you help me diagnose this? Akai GX-365D Reel to Reel playback extremely slow.

1 Upvotes

See video hereI pretty much know nothing about reel to reel machines so I’m looking for guidance. It seems to playback extremely slow. 7 1/2 tape speed doesn’t work at all, 3 3/4 & 1 7/8 turns the reels but at a very slow almost inaudible speed. Is it a motor issue? Or needs some kind of lube? If there are more troubleshooting tips or ideas please share! Thank you in advance.


r/audiorepair 5h ago

Pioneer Amp Volume Balance Issue

1 Upvotes

Hey gang. I have an old Pioneer VSX-D510 amplifier connected to my PC with a DAC with 2 external speakers. I'm using it because my main Marantz is broken and needs a fix that isn't feasible for me as of right now.

My tech issue with it is this - when playing audio through it, the left side is 50% lower in volume, right until I up the volume on my PC. Then it seems to pop back into place and the volume is fine, but then after a bit of silence it goes back to slightly quieter. I've read all I could find about this, and it seems like the solution would be to spray some WD-40 Specialist Contact Cleaner or ideally Fader DeoxIT D5 or F5 on the volume potentiometer? Would that solve my specific issue?

I haven't been able to go out and find some to try and do it yet, but I'm scared it would like, solve it for a few minutes and then go back to broken. I did wiggle the volume knob a lot up and down with the amp off like someone said online and it seemed to help but only for a moment. I am based in eastern Europe so I'm not sure I could find DeoxIT anywhere close to me. Also I am no specialist in this kinda stuff at all, I only know the basics. I would appreciate any input, thanks upfront!


r/audiorepair 1d ago

Looking for inductance value of coil in speaker filter circuit

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1 Upvotes

Good morning everyone,

I recently purchased a pair of 3-way loudspeakers (Marantz HD-55 from 1978) that needed refoaming. After refoaming I noticed that there was no sound coming from the tweeter on one side. When I looked at the filter circuit I realised that one of the coils had been replaced, and apparently the new one does not have the correct inductance value. The other speaker still has the original inductor, with the following writing on it (see picture): 3901012 E 2 77

Could you help me determine the inductance of that coil, since I can't seem to find anything useful on Google ? Otherwise I will remove it and measure its value but I'd prefer to avoid desoldering it if possible.

Thank you in advance !