repair

I have a 5-CHerry amplifier made by the Digital Amplifier Company that no longer powers up. The owner of the company Tommy O’Brien unfortunately passed away several years ago so I’m looking for someone who may know how to service one of these class D amplifiers. I’ve attached a few pictures to...

Hi! My beloved D-6 became unusable after 3 years... It started making random noise sometimes and now I can hear that constantly. Can someone guide me through troubleshooting? I've checked 3V3, 1V, 4V, +-11V rails and they all seem fine (I haven't noted the voltage ripple tho). Can't really check...

Hello, I have a pair of Logitech LS21 speakers and the left speaker works at 100% where the right one works at 10% efficiency. I have checked for any outdated software and could not find any issues. I checked the cables to see if they are bent or broken. Everything looked fine. I remembered...

Hello, someone has sent me a digitization of a cassette tape album, it's 40 minutes long, but at times you can hear this garbled digital artifact, which sounds like they had the wrong settings for sample rate when they recorded it, here is an example...

Greetings! Long time lurker, first time poster. Do let me know if this is the wrong thread to post this. After 10 years of wonderful use, both units are now in amplifier heaven. I'm fairly competent with repair and soldering but in no way an engineer so I'm hoping anyone with expertise can...

Hi, I'm really struggling to figure out something so I thought I should ask here. A tweeter in my NS-1000 stopped working. I'm pretty sure it's the crossover because I soldiered it in the other speaker and it was working there. It's also probably not the L-pad because I connected it to the...

Just want to ask if anyone had previous experience sending back a Topping device to China and was it worth the cost. My EX5 just broke and it is out of warranty, it simply cannot start up, from what I can see it will cost 35USD to send it back, then 25 USD to ship it back and if Topping should...

Hello Friends, Need your help to fix the amplifier or guide me. I recently bought a Yamaha AS-501 amplifier from a shop which was being sold for spares/repairs. The symptoms were that the power light was flashing orange. I read the forum and Yamaha service manual about resetting protection...

Hi all - I have a buzz/hiss I can "sometimes" hear from my speakers from my seated position. It sounds almost like a decaying buzz/hiss... as if I were to leave it alone long enough, the buzz would just dissipate. Here are my particulars: Marantz SR8001 I use it in 7-channel input mode to...

[ SOLVED ] Yamaha A-S700 intermittent power-on failure. Updated as of 16 March 2024 Please help in repairing my Yamaha A-S700 Over recent time my A-S700 has developed an intermittent fault (and today eventually failed completely). It started a week ago, it would not switch on. I tried on/off...

Hello all, I have aquired a pair of second hand EVE audio SC208 which are behaving erratically. One of them have Flickering LEDs on startup but eventually works (until i restart it). The other one is dead. I'm pretty sure is due to the power supply. The only fix i had is from this guy that...

Hi everyone! I am writing to better understand an issue that my amp displayed today. Specifically, the amp gives a periodic popping sound on the right speaker, even at 0 volume. The amp is question is a Pathos Logos that I recently bought used (worked fine until today!). Something to note is...

Hello, I recently got this subwoofer in a package deal. But I can't seem to get it to come out of standby mode. There is a AUTO/ON switch, but this does not do anything. Tried LFE and Line In but the sub is not turning on from a signal. I have opened it up tried checking for blown caps (not...

Brief overview: Klein + Hummel O110, around 15 years old, making noises as seen in the video below. Quite temperamental tweeter electricity noise, started around 3 months ago, 60% of the time it works perfectly fine, it is unusable when this happens. The noise still happens when XLR cable is...

Hello, I have a JBL SCS 125 which is 5 satelite speakers and 1 subwoofer connected to a Harman Kardon AVR 300RDS. Recently, the subwoofer kept turning on and off rapidly for 1 to 2 minutes before staying on. It's only after that clicking on and off for 1 to 2 minutes that I could start using...

TLDR: - Orange wifi light blinks, Klipsch claims it's wifi problem - It's not a wifi problem since I can verify it's connected to the wifi through my router's admin and can actually visit the device's IP address and get a landing page - While orange wifi light is blinking, nothing works...

My 851D kicked the bucket recently and it's out of warranty, so I opened it up to see if re-seating connections might fix the channel/static issue, whether there were any terribly obvious issues with caps, solder joints, etc., and, of course, to take some photos. First look: Nice toroidal...

Hi there, this Morning i walked by my trusted KH120A speakers and noticed a relatively low but noticeable sharp crackling sound coming from the tweeter of my left speaker. I bought the pair in 2013 and had it powered on for 95% of the time as that's what i was recommended in order to avoid...

As there seems to be a good number of Genelec fans on this forum, I figured it would be the right place to document my repair attempt of some Genelec 8020B speaker. I recently got 2 speakers: one of them has a weak woofer/bass output and a lower overall volume. The previous owner informed me...

This thread is the follow up of a discussion started by myself in a thread about different speaker cables lengths because I wanted to know if that could be the case, in my ignorance. I don't want to keep polluting that thread so I start this one. The last intervention by @restorer-john, which...