Love the condensed version with voice over = great work, thanks heaps - I learnt a lot on this one

I had a long running hobby of designing and building amps. A lot of extremely big and powerful solid state amps and a few of them are huge class Gs. I’ve repaired quite a few production amps too. And LOOOLLL there’s no way I’d have been able to fix this thing 🤣🤣. Even with a schematic. That was insane. You’re a seriously talented amp tech with an amazing level of patience. Hats off to this. I’ve never built or worked on a class D though since it’s an intimidating road I didn’t want to go down. For reasons like this 🤣

So glad i found your channel again dude. I actually used to watch your subwoofer videos in my very early teenage years because i loved subwoofers and now 8 years later i try fixing what i can and it turns out youre doing amplifier repair videos which is just sick. I watch alot of component level board repair videos in my free time aswell but theres not many people in the uk that i know of that do it sadly. so coming across youre newer videos was a relief. im also in the uk.

Dude, I get excited like that too when I chase down something I've never seen before. I think it's something only another tech can understand!

master of suspense, hardcore, dog with a bone audio amp repair. What a roller coaster ride that was, I really enjoyed this video.

Man you have a serious serious set of skills. Be proud!

As a newb tech this is why I’m nervous to dig into Alpine, JL, Fosgate, etc. I prefer the longer more detailed vids myself as I use them for reference while learning/dealing with a similar problem, but the new breakdown of previous work combined with your usual post was cool, def did it justice with the important info bro and actually learned new troubleshooting techniques, ty Sam!

Amazing!! Such a shame in this throwaway world that these skills are fast dying out , you da man🤙🏼

We all go down that rabbit hole eventually . We refuse lose.. 😤 . But in the end knowledge is gained. So either way it's a win. 🏆 Great video

Ah the frustration of it not being what you thought. Then the compound failures. I presently have a switchmode supply and class d mono amp all on one board that has a low output. No info, and no comparison. What a chore it is. A brilliant example of how things can be fixed with enough time thrown at them. The right to repair should include access to technical information though or its just a lot more of this. Thanks for your efforts.

LOL that explosion scared the shit out of me!

That one has been a crazy fix Love all the episodes of this series very well done as always

I love this time how you did the voice over. Amazing work

Love the format Bare!

Note to self: NO MORE ROCKFORD FOSGATE REPAIRS.

Tenacity. I loved this video. I end up in similar hair pulling situations when troubleshooting boards. I work on industrial controls, and it's all learned on the job. I wish I has your skills. Great video! Learned alot, if anything, just keep probing, take good notes.

Yeah boy!... Congrats Sam. Thank you so much for sharing this success. Watched all the livestream replays and so happy to see it come to a good finish for you

Awesome, that is one complicated circuit design, would love to see a full run down on what make their class AD design different from your typical class D

Love your vids, as fellow audio repair tech I get just as excited to see you trace down the origin of the issues like a complete surgeon and see the Great work! Keep it up 👌 cheers from Cali

That's very good going, hats off to you. Fixing that amp without a schematic is pretty bloody awesome. I guess the dual transistor packages are configured as differential amplifiers/comparators, checking signal or DC conditions, maybe in a closed loop. Either way I'm impressed by your tenacity; kudos.

I missed Sam live stream again... so glad he makes vids like this for those who missed it.

I'm 100% here for the cheese sandwiches and explosions

I thought I was patient with fault finding, but you are next level !!

BRAVO MY MAN!! Never cease to amaze/impress me👊🏻👍🏼

this one of best work you ever did patience was the main at all congrats sam you're the best

I agree with all the others.....I love this format! It's perfect for these special longer that expected .....painful repairs. I've listened to these amps and own a 1500bdcp and a 400.4, a 4 channel and a baby brother to the one just repaired. They are amazing amps.....easily competition quality! Then what's the problem??? The name and the history brand of the company, Rockford Fosgate, scares the SQ competitors like a pack of hot dogs at a campfire (If ya know what I mean lol). I've honestly wanted to hide these, installed, under a fake rack of Zapcos and see what happens!!! Oh I know they would be amazed! Honestly, if most people would give an honest opinion while comparing an RF and any other SQ amp, there would be no obvious sound differences! OK ok okkkkk.....I'll stop. LOL! Great video....and the host made it greater!

Jobs like this have the greatest challenges but hold the best rewards because of how real they make the struggle!!!

Excellent work. Great professional attitude and attention to detail. Good job!

I had a t1500bdcp that would sometimes work perfectly fine and other times not power on at all. Bypassing the protection comparators allowed the amp to turn on and build rail voltage but sometimes it would have no output, and sometimes it did. I would also sometimes come back the next day to the amp working perfectly fine without even doing anything to it the previous day. I spent so many hours on that thing that in the end I concluded that there must've been a (or multiple) broken internal trace somewhere. Without schematics it makes repairing these RF amps pretty difficult. Good job on finding the fault :)

Just subscribed.. This was very interesting to watch

I remember years ago when I finally got my expensive little monster! One of the best RF amps I’ve owned.

Rockford hooks up their diagnostics program here's the issue Bob lol .nice job bro

Such a great example of fault finding, good stuff!

I'm here for the vibes

This why you the man Sam💪🏽. I have a RF T2500bd her for repair, still over my head ATM lol

WOW. A great video! I would of followed the same path BUT would of given on that mess. Gods knows how many hours you have invested in that repair!

Great stuff love your work and vids your persistence paid off

Trying to learn something watching your videos....very interesting to me anyways! You should go over the amps that you are working on and talk about the quality and design of the amp!

I've learned alot and probably might attempt a fix my self

Remember all those videos that scare the dickens out of you when you focus on one thing and then this loud scream comes out of nowhere? That was me @ 12:06

RF makes all their own designs. Chip set, etc. are specifically for RF models. That's what makes a RF a RF amp. JL is similar. Not sure which is better/higher quality. Plenty of cheap amps out there that make a lot of power in a clean manner, and some come with free option of setting vehicles on fire, like Sundown. Pretty sure Skar amps have free fire starter circuits built right in too.

My t800-4ad stopped working, and was going to be my first amplifier repair. Needless to say, ****. :D Also have a t600-4ad which started killing speakers, probably shouldnt buy these amps anymore. :P BUT that being said, your videos helped regain my interest in trying to fix some of these amps so cheers.

You have great dedication!

Sam awesome repair.

this really makes you appreciate the Simplicity of Korean designs. there are some people that stream games and then there are those that stream amplifier board repair. some people just want to see the world burn🤣

Pro level for sure

Been on all livestreams for 10 minutes each, thankfully it's shorter, nice

You should buy a thermal camera…that transistors should show up some heat beeing faulty…these way you could locate the faulty much faster…however nice video 😁😁😁

The opening statement...hehheh, yeaaaa, I've got a Punch PBR300X2 that has been irritating me muchly for repair and it's not even that complex, just finnicky and seemingly haunted :D EDIT: whoa, you've got loads of videos since last I was here. KZfaq fucking pushed zero notifications to me for any of them EDIT2: Fuck me, this repair is turning into a rabbit hole of despair and hell for you! That was tense as fuck haha

Good shit man!

That is a great four channel amplifier

Great video

3000+ views! Go Sam for the win. honestly brother if Rockford Fosgate hasn't reached out to you with an offer of employment, and a nice fat pay cheque, by now, they are the ones losing out! Great video as always. sorry haven't been around much, health issues. Take care and be well!

I got a Rockford 1000x5 with a couple blown transistors. Put some mulch in my car and apparently a lil water got in and blew up 2 think power supply transistors. All so got a old school 90’s punch 100x that got in a accident and actually knocked some of the caps off the board. Would love to get a quote on possibly fixing these.

Awesome work!

Did you see this class d switching hahahaha 😂😂 soo nice

Hey Sam, if I send you a bass 12k that no one else has been able to fix (shipping paid, you can have the board if you want) would you like to do a video on it? Output stage is ok, power supply burned and the amp lab couldn't figure it out.

love the process

Great work!👍

I had faith in your abilities and knowledge.... IRS...WTF...classic

U r a beast bro!!!

Nice! I kinda want one of those, I have the 400.4 currently

Watching Louis Rossmann for quite some time now and I gotta say this shit looked WAY MORE complicated than any MacBook repair I've ever seen. I didn't get why this amp failed the way it did tho.

Amazing video, thanks!

12:05 scary

Both my amps are jl audio and after watching the last few videos you've done on jl and now rockford I'm actually starting to think without having a BAREVIDS type repairer in Australia it's probably better not to own these super complex amps as no one will touch them after warranty and that's a lot of money to be throwing them away if something goes wrong after warranty is out lol

Well done dude

Good boy!!!!

I used to repair pro audio gear. I came to the conclusion that class d amps were all disposables, no matter the price. Almost all class d amp failures resulted in smoke and a crater in the board. The only reason this amp did not smoke is the low voltages involved.

i've 4 of the BD2500's and they're all a good 10 years old. NOT ONE problem

Man......this Amps are three (or more) layer... I ve the same difficul to repair a t600-2... Incredible Amps.....

This was a story of will... Jesus hates a quitter!

Geeze! I never owned a Rockford and still not planning on it.

Amigo você já testou os anplificadores power systems, e um verdadeiro tanque de guerra no Brasil!!! Vc tem que ver.

I m surprise you to don't have a glass with wine on this repair. Keep your good mood

Do I have a schematic for a Rockford 1000x5? Blew some mosfet think on power supply side. Mulch dripped water on it and it exploded 2 mosfet but don’t know what to replace them with cause they vaporized there part numbers.

Vibes

What consumption should the Rockford t1500 amplifier have at rest

i own this amp.. bought it on ebay for 400$.. reason in 1999, i bought an RF power 800a4.. that amp still works (though has some cold solder issues with the pots).. I pretty much got every bit of my money out of that amp and could still bring it back to life... not saying other amps couldnt do the same ( i also own 2 mtx 81000ds which both still work fine from 2002) but why go elsewhere?

Nice video 🔥🔥🔥

I love your work, I wonder if you can fix my rockford Fosgate t500 and my punch 400x4

I have the same amp. Amp upon power up flashes in and out of protect and pops and crackles all speakers until it warms up, then plays completely fine once warm. What could be the cause?

Hey I have a v power Alpine 4 channel. What would make the high level in not work but the low level works perfect?

Defect found at 12:04

What do you do to protect yourself from soldering fumes and chemicals. ? Lead, etc And have you been affected?

I have a questions is this a good amp and is it worth the 1000 dollar asking price or could you get something better?

Your amp is all set sir, that will be $24,729, a case of beer and a XL bottle of Tylenol.

Great job. I'm a bit worried, though. When you put the amp back together, did it ask you, "Have you seen this boy?"

i have a Luxon 1000 d reference amp just curious anyone have one of theses or have you ever repaired one i have one that died but it was well abused the manual for the amp states 0.1ohm stable and warranty is void if you do not run a minimum 200 amp fuse the amp does load down well do not no if stated power is correct for this amp is older amp and cannot be found anywhere information is hard to find

I’m a new subscriber. Do you have a discord ? Also, I have just started recently in PCB repair, these two amps that I have our my first to repair, from a friend. It’s not life or death if I fail. Rockford punch 800a2 and kicker zx750.1 On the kicker, I’m told it was a working amp, but a previous repair attempt from the actual owner himself was replacing the 2 damaged 40amp blade fuse holders on the board with 2 marine grade inline fuse holders. Not rated for 40amps and obviously horrific looking . I have not been able to source replacement fuse holders. The design in my opinion is horrible from an engineering standpoint, as the vertical posts themselves (perpendicular to the board) is actually what supports it physically. Anyway, any idea where I can purchase these ?

Have you ever fixed and hifonics that has the red and green light on at the same time if so send me a link to you that video thank you

Do you stream on twitch or just KZfaq ?

got a p500.2 and a p400.4 and i cannot see anything wrong with them with the exception of poor sound quaility .. i have basically rendered them shelf ornaments after opening them up.

buen día, te hablo desde bucaramanga/colombia, soy seguidor de tu canal por youtube. tengo el mismo problema con una ROCKFORD 1000.4, podrías darme información de la referencia de los IC Y DONDE LOS PEDISTE. GRACIAS. Good morning, I am speaking to you from Bucaramanga/Colombia, I am a follower of your channel on KZfaq. I have the same problem with a ROCKFORD 1000.4, could you give me information about the IC reference AND WHERE YOU ORDERED THEM. THANK YOU.

Is this because of Rockfords class "AD" which is a fancy variable switching frequency to lower distortion and then at high output levels you get more power but with a little more distortion? thats what I have heard

Going to share this with one of our customers, one of his kept burning drivers so he dumped them and changed brands.....

How can I get ahold of you about fixing my Memphis mc16 4000.1

Luckily I have all RF Power Amps - so I know who can fix them if I kill it :)

Do you fix amps i have a kicker cxa 800.1 thats stuck in protect mode the power and ground terminal have a short , Thanks

Hey can you do a sine wave test on the dd zvl module and see how accurate the crossovers are If you don’t have a module I can ship you mine to test if you ship it back