Had a flat tire on my truck this morning and then on my way home form work my sundown 3k started cutting in and out at full tilt, back to sundown it goes, what a shitty day.

Factory installed smoke, all electronics run on it. Once it is out, those parts are gone. Until all components with new smoke are replaced, the unit will not funtion haha. Good video mate.

My theory: there might have been a loose screw/bit of metal knocking around in the case, it hit the back of the board where the mark on the case is (between rail and ground I believe), it vaporized and took out the PS section.

I can't say for sure without looking at where the zener's are being used in circuit but if I had to guess, they are probably being used as some kind of voltage spike suppression or some similar function. That board tho.....DAMN! Burnt crispy!

I would probably have cut out entire board section and replaced it with vector board and rerun traces with a repair kit. Used to use "Pace Cir-Kit" repair kit, which is still available, but now bloody expensive. (Found a mostly complete set on ebay ~$15 shipped, but new kits run about $135.) Kits include through hole rivets.

You stated output fets are 24n40f, saying it’s a bit excessive on the voltage side and that you could replace with 69n25 fets that would make it much more stable @.5 ohm. I’ve noticed the switch lowers the voltage rating but increases the amperage rating of the output mosfets. Im assuming that’s the main change between these fets, is that usually the common way for making an amplifier more stable at lower ohmage? I’m new to the amp repair scene and wanting to learn everything so any info, on any level, would be greatly appreciated bro, been binging on your vids and they are helping tons with my Kicker 06ZX750.1 power supply meltdown repair 🖖🏼

DAMN YOU YOU TUBE i keep missing your vid's because you tube isn't telling me even if i make sure the bell is clicked

why don't you take a picture of the damaged area, and completely cut it out and replace with a new board with out the copper clad. Or use copper clad board and re etch what is missing and splice it back together with a nice looking repair that will last. I know it would cost more but as for providing a warranty you be able to do that with no problem.

Hey there... I've been looking at a 4000w mains inverter (sine wave) recently which is surprisingly similar to the amps that you are showing, and I wondered if you have ever seen a similar design, it's quite interesting. The unit was reported with intermittent flashing of the protection / shutdown light, and a ticking sound, but was still running, and powering ~2000w of equipment. The unit has an architecture almost identical to the amps you are repairing, and even has the same type of driver boards (I'd love to know if you recognise any of those from amplifiers!). Anyway, it's a 24v unit, and the power supply section has 6 power transformers, each has a pair of IRFP4368 FETs... but each transformer, with it's pair of FETS is in an isolated circuit with on board fuses (sharing the drive to the gate)... and what has happened is one pair of FETS has gone down, burned the drive resistors etc... but the (40A) fuse for that pair of FETS has blown, and the remainder of the unit is still running!... I believe that one of the drive channels is impacted by the failed FETS however, and this is causing the remainder of the power supply to run at a lower voltage than normal (it needs 340vdc)... and this is what is triggering the warning light. The net result seems that I have only 2 FETs to replace, not 12, and the unit remained operational, albeit at a lower output power.... I'm somewhat impressed! I'd love to know what you think about that design.

Could you fix mine? I have exacly the same amp. It suddenly stopped today at low volume. Powers on but no output.

Hello . Do you know the IC Nummer of this AMP output. It could be very helpful . Thank you very much

Great work, I have one Sony car stereo function with CD,DVD, and USB, aux also but isn't working properly, when I go for high volume it's going to be shut down automatically and some speakers line doesn't work, what can I do, can I change ic to get proper work my stereo back. Help me Sir.

A bit of Lucas magic smoke and she'll be good again! :D Really bad failure. Did you ever had an amp with blown caps?

David P what type for oscilloscope should i buy how many mhz should be the minim on

Are most of these amps that you repair because of running them at too low of ohms or poor airflow?

Hey man, I have problem with some small amp, when I hook it up, the power light is on, protection light is off, everything hooked up correctly! The amp is definitely on, but the sub isn’t playing! What could it be?

How long have you been learning because your amazing

Hey Barevids! I have the same amp, any clues it makes weird sound when playing music and goes to protect when played at high volume. Problems on signal side?

That things fries again should be spare parts! I wound't have fixed it... Yikes Kaboom!

Hi, I wanted to ask for an Evo 4000 1d sound digital It has short a MOSFET that has deleted model only says C2 wanted to know if you could guide me in a replacement since you repair amplifier class d. Since thank you very much from Argentina

Im using Avasva instructions to make it and I do it already :)

Do you have any 4.5 inch drivers that I can have?

Hi, i have a huge skar audio skv2 2500.1d amplifier that has been blown for a while, sitting around in my house and it feels like a waste, but, i am unable to find someone who is willing to work on an amp of its caliber in my area. Is there a way for me to send it in to get it fixed? And approximately how much it would cost... it doesnt look bad but what do i know. I am not sure where to message you on though! Thank you!!

Can we get more camera angles I just carn6 keep up trying but just to stupid to follow

The horrible audio quality and surcharged screen makes me stop watching at 14'00,it's a pity, the content is awesome and I preferred watching the old videos.

When you just buy a new amp holy crap!

Wouldn't it be easier to drill/cut out the entire burnt section, etch your own PCB, and epoxy it in like a drywall patch? I'd never trust anything that charred.

nooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

You're too knowledgeable to be working with the improper tools. You need precision electronics tools for this kind of repairs... those side cutters gotta go.