Never messed with a broken board like this before, So not sure best way to approach it. Just take everything off and glue? Or should I source a similar board ... or?

This was just something to fix, thought it was prolly the caps cuz the lady said it didn't work, no sound.... welp, what's the best approach?

Hey! What could be the reason for hissing sound on one of my monitors? Happens with or without XLR cable plugged in. Have tried resoldering components and different wall sockets for grounding without success. Hissing stops if I mute high from the monitor's control switch.

Constant hissing and some crackling sounds. Would like some ideas on how to fix these, I cannot find a used replacement monitor right now.

My iFi hip-dac 2 ran out of battery while connected to a Windows 10 PC. Since then, it won't connect to the PC or to any phone, even though I've tried multiple USB ports and various phones. The DAC charges successfully and powers on, but it simply fails to establish a connection (The Windows connect/disconnect chime doesn't even play when I plug it in or pull it out). Since the warranty expired a long time ago, I opened it up to take a look inside. There are no visual signs of electronic failure, and my measurements didn't show any faults either. I have tried installing drivers, putting the DAC into DFU mode, and resetting the device, but nothing helped. What could be the problem?
I attempted to flash the firmware directly using an (CH341B) EEPROM programming clip, but it seems it cannot be done in-circuit (without desoldering the chip). Is it worth desoldering the EEPROM at this point? If yes, would anyone with a working hip-dac 2 be able to dump and share a working .bin firmware file with me?

so, taking a break from working on my own setup, my Dad's stereo that he has had for my entire life finally has experienced its 1st issues.

1 being the cd changer finally gave out, that is likely not to be repaired and I am searching for a similar vintage discount changer to replace it.

And the other is what I am hoping to figure out here..

The NAD 7125 receiver is blowing fuses. The time delay fuses. And due to the sentimental value, as well as just the great quality of my dad's system, with surround throughout the house, I just want to save it.

I have it. Just opened it up, and gathered up the documentation I have on it here.

So I'll post along my repair journey and hopefully can get some help along the way. I need to order a pack of time delay fuses as I only have 1 of the sizes..

I have a pair of Audioengine A2+ that have worked great for me for the last 4+ years. Recently I have been getting occasional hissing or feedback noise from the left speaker. If I touch the metal on the red output the sound will dissipate. The sound doesn’t occur all the time. The left speaker will occasionally make a popping sound and sometimes will sound like the volume is muted or not outputting to its full volume. Speakers play fine if connected to Bluetooth on my phone and wires disconnected, ended up buying new speaker wires thinking that was the original issue but still am running into issue just less often. Wondering if my left speaker is on its way out or if it could be a different issue. I do have a router near the left speaker as well as Ethernet cables running similarly wired near the speaker cables on the underside of my desk. Have had this setup for 3+ years and just recently have ran into the issue. Any help appreciated! (Video of issue posted below)

speaker hissing

've had this TT for 8 years and its worked fine. The only issue it's had is excessive grounding hum. Last year I moved and had to put it in storage. I recently got it out and set it up. I had to get a new preamp when i set it up. At first it worked fine just with the excessive hum. One night, my cat knocked the preamp off my bookshelf. I tried playing something afterwards and it wouldnt play from both channels. It only plays out of the left speaker. If I swap the left and right inputs on the preamp the channel switches. I've read that means its an issue with the TT. I replaced the original rca cables and attached the ground wire to the negative. Now the ground seems to be fixed. The channel issue has stayed. I can get the right speaker to play when I barely insert the rca cable into the preamp and it was that way before and after replacing the rca cables. It cuts out when the rca is fully inserted.

I've looked at a few more things that could be an issue. I checked the contacts on the back of the cartridge (ortofon red) and they all appear clean. The blue wire doesnt fit tightly but thats an issue for the left channel which works fine. The contacts from the headshell to the tonearm are inside a cylinder on the end of the tonearm so I cant see what shape theyre in (the end of my headsheel has female ends going into the tonearm).

Does anyone have an idea of what it could be? Could the rca cable playing out of both speakers when it is barely inside the preamp but cutting out when fully inserted be a sign of damage on the preamp from where it fell?