Rockford Punch 60.2 Amplifier repair!

Рет қаралды 46,710

6 жыл бұрын

These mosfet final class AB amplifiers are pretty new ground for me, so t his was a nice repair to do and I learnt a bit more about how they work! Turned out to be a relatively simple repair but it was good to check all the things anyway.

Пікірлер: 89

@jameskilgore3793 Жыл бұрын

I have this exact amp. Hooked up to 2 10"kickers ,in sealed box no ports..I'm telling y'all non believers these amps are on another level. Definitely recommend not to much but no slug

@frankrizzo5155 4 жыл бұрын

Great editing! Good video keep it up!

@nortoncarty3585 5 жыл бұрын

Keep up the good work sir am also a repair guy too living in florida now am from Jamaica been doing repair for 19 years now so if any one need speaker amplifier equalizer you name it repair well am here

@MsDitto90 6 жыл бұрын

I have 3 old Rockford for you. Just saving up for the repairs

@ohiyotrippole6645 5 жыл бұрын

I've had one of these amps for almost 20 years. Still works excellent. 270 watts bridged at 4 ohm. Made In U.S.A. Old school power.

@AudioDogFlorin 5 жыл бұрын

when you got a burn pcb try cleaning it with some alchool ( in romania we call it "izopropilic" ) it take the burn marks away, and after the soldering i clean the board again with alchool because it looks almost like brand new

@jasonwarbird 6 жыл бұрын

Seth Tips FTW!

@2guns908 6 жыл бұрын

Good job 👍🏻! Fix my amp

@THEROLLINGROAD2010 6 жыл бұрын

When replacing the chopper mosfets with alternative types I would also take into consideration its / their on resistance not just the gate turn on voltage as the on resistance determines the current through the switching transformer and hence power rail voltages.

@erwinperez7815 2 жыл бұрын

Saludos bro desde mexicali bc mexico. Todo un experto y execelentes videos

@MasterDJRenn 5 жыл бұрын

I have a RF 1000.4 amp, on turn on, (no signal, engine off) it sounds almost like alternator whine, as soon as i give it a signal, that noise completely goes away and then I hear the normal slight hiss. Any ideas what it could be? Im guessing there is some sort of muting circuit.

@delxmax 4 жыл бұрын

Unusually satisfying to watch. Thanks man. At 25:15 is it me, or did you touch nothing, while calling out a read of "nothing,nothing,nothing"?

@lazarovelazquez1002 6 жыл бұрын

Saludos desde cuba

@jordanciaramitaro6351 4 жыл бұрын

Hahaha, everyone is America is like “yea 1/4” drive like literally everything.... well made in America”. This corona quarantine has me catching up on any videos I missed.

@TiagoCaramori 2 жыл бұрын

friend could you tell me what is this transistor, it appears to be IRF1810 or IRF1010E, I can't see it properly in the video, sorry but I don't understand the English language

@shannontuttle5754 3 жыл бұрын

Great vid bud. I'm doing research on doing paste on old amps to make sure they don't over heat. The amps work fine but have just been sitting in a garage for 20 years. I have 2 ppi a200 a friend is willing to give me for nothing so I would like to try and pull the boards and replace the thermal paste to insure they work for a while. Any thoughts on how long you think the factory paste lasts?

@starburstphilly1 5 жыл бұрын

How does one identify which driver transitor to use? I've got two blown ones on my T3000.1 both with the code 2GM7 on them. But when I look up that code it gives me nothing. Also what's your thoughts on the 75344G mosfet that came in these? Thanks brotha, love your videos

@mattmcevoy3837 5 жыл бұрын

You see a ton of Amps! I need a Marine 4 Channel it going to be moved into the Bathroom because Priorities. Do you have anything you suggest that are thy best well built Amplifiers knowing im on water so Im not spending a ton. Was looking for enough RMS Power to Rock the Waterways in NY! Salt Water Loves to Kill all! Almost makes sense to get a disposable amp every other session!

@kevinkeelan354 5 жыл бұрын

That amp is older than most you tubers.

@393strokedcoupe 5 жыл бұрын

Lol! Yeah, but they are work horse power houses. I have the 50.2 with the high/lowpass switch as a small board you pull out the bottom and turn it around to switch between high/low.

@kevinkeelan354 5 жыл бұрын

393stroker I’d take a old one over a new one. I had one in a mk2 fiesta with a xr2 kit 😀

@kousinkielbasa4244 5 жыл бұрын

I still have my 200.2 in this series from way back. Used it to run my mids & highs. Ran both the left & right channels in parallel. Amp barely even got warm. Love old school Rockford!!!

@393strokedcoupe 5 жыл бұрын

@@kousinkielbasa4244 Agreed. I have a JL Audio amp my dog pissed on in the underfloor storage in a Durango. I am stumped on how to fix it. I loved that JL so much. That one is the same age as the Punch.

@Broxine 5 жыл бұрын

Kevin Keelan i have a 500.2 from 1999. to a dyno test it does over 3kW on 1ohm ...

@Thumper68 3 жыл бұрын

Standard hose clamp same size of screw driver as well.

@tillyhatcam 4 жыл бұрын

I’ve got a Rockford 4600 that blew an output FET. I pulled the two FETs and poking around I discovered that the main rail +caps are at 18V , probably about right as the caps are 25v rated. The - rail is at -27V. Any ideas where to look? Can’t find any bad components. I even replaced the TL494 and LM339M chips, no change.

@rafaelsandoval7077 3 жыл бұрын

The headache those amplifiers or the mosfets they're soldered on and those are the ones that mostly go out

@stuartmp1974 5 жыл бұрын

Awesome videos. So happy that I found your channel. One question are you able to scope probe with just one connection as I don't see a negative scope clip anywhere?

@barevids 5 жыл бұрын

Scope and power supply both share ground through the mains

@stuartmp1974 5 жыл бұрын

Great Idea.. did not see your power supply I guess. I usually have my power supply hooked as floating so I can probe any two points. But yes your right I could do that so I don't have to fine a place for the ground clip. Just put the bridge plate to earth ground on my power supply.... Awesome thanks for the tip and a big thumbs up to you, your channel and the super fast response. 😁🤗😁

@justpeaceful6899 2 жыл бұрын

@@barevids Good night.Very informative ....can you post a video as well with punch 100x2 repair.Need to see a complete circuit board please.

@gerardopozo9960 4 жыл бұрын

Hello from Mexico my friend, I have a Rockford fosgate 800.2 power amplifier with almost the same failure as you show in this video, I reviewed the supply voltage for high (+50V, -50V) and also the regulator voltage in this case (+20, -20) they are OK, also I measured the signal from drivers and I got a similar signal like you, but when I install the MOSFET (original number) this works only for a minute and then MOSFETS goes to dead also power resistors (0.1 Ohm). Please let me know some recommendations to repair my power amp. Thank you very much in advance!

@Broxine 4 жыл бұрын

Gerardo Pozo did you get it repaired sonehow?

@gerardopozo9960 4 жыл бұрын

@@Broxine Hello Broxine, No, not yet, I still have failure but I left this case pending. I starting to doubt about Mosfet I don't know if they are originals, I live in Mexico and many dealers re-labeling spare parts. Incredible!

@shean-koklim4197 4 жыл бұрын

Do you happen to know the zener diode number on the power supply side? Mine showed 1n53668 633 (Motorola) but I couldnt find anything on the net about it. I toasted mine (Punch 100x2 Trans.Ana). Any help would be great. Thanks. EDIT - No worries,I found it. Its 1N5366B ,B instead of an 8.

@rogerwillams2814 5 жыл бұрын

i knew that screwdriver would fit right on hex screws .....

@pepe58pepito54 5 жыл бұрын

i need to fix my remote on terminal from a 200a4 rockford . a 60w soldering gun from ebay work ?

@2guns908 6 жыл бұрын

I have a 2002 model 1500.1bd with two smoked fets,still plays but i wanna fix it before I really kill it

@pepe58pepito54 5 жыл бұрын

hi friend ..by any chance you sell the remote wire terminal spade ..the one in my 200a4 broke, and i have to solder it

@danebrown4274 4 жыл бұрын

Can you state which transistor comes directly after 50M06 transistor, 60.2 Rockford fosgate old School amps

@aryostosantossantos1215 3 жыл бұрын

shalom

@pierreiverson909 3 жыл бұрын

Do you have suggestions for somewhere i can ship my amps for repairs

@egimabe4869 5 жыл бұрын

this amp is for music, class D is good as an electric welding machine

@thorlancaster5641 5 жыл бұрын

Older class D with no negative feedback circuit sounded bad, but any decent modern class-d should be audibly transparent (up to about 10khz, then you get a bit of distortion, but any harmonics of 10k are at least 20 and thus inaudible).

@egimabe4869 5 жыл бұрын

I agree, but I believe it depends on the type of music you listen to, and you also need to consider the mental fatigue that you get during listening.

@dennycote6339 3 жыл бұрын

Have you seen the Class D amps by Mark Levinson? Bout $55,000 a pair.

@egimabe4869 3 жыл бұрын

@@dennycote6339 I have not seen It,but I always remain of the idea that,a class D does not reproduce music,but acoustic pressure.

@arturogaytandavalos5298 5 жыл бұрын

for output 31n20d 0r 45n20d

@Broxine 4 жыл бұрын

Is there a guide how to set the bias?

@stuartlloyd622 6 жыл бұрын

Hey Sam I'm desperate for an answer to my problem I just bought 2 pioneer prs spl2000d amplifiers and I used the wrong bass knob in the amplifiers and they now don't work the light is on but no output and nothing burnt at all on the entire circuit board I have been watching your repair videos and I have learned so much and I thank you for your free advice. Any ideas if my amps are damaged beyond repair or ideas where I can look for parts I could replace to get them fixed . Please let me know thx

@barevids 6 жыл бұрын

hey buddy, that sucks, wrong bass remote can cause a lot of problems, i would try changing all the opamps on the input, they might be 072c or 074c, or something similar.

@ashleyvega4901 5 жыл бұрын

@@barevids i have the same problem with my kenwood 9106d it was working then i got a new amp and stored it, when i hooked it back up it powers on but no sound other amps work fine when hooked up to my system theres no burnt smell or anything. please help.

@jasonborn9394 5 жыл бұрын

Barevids . What is the best sight to order fets

@DaddoDenon82 4 ай бұрын

Hello :) could you write to me what model of diodes d2 and d3 are?

@williamkennedyii6465 Жыл бұрын

Can u fix Rockford 351s power 2ch amp no sound out put on 2 ch

@kuwaitlife4467 2 жыл бұрын

Hello from Sri lanka I have jvc ks5500 4 channel 800w amplifier have power producing all work but audio output not work I check all transistors good wat problem sir

@arturogaytandavalos5298 5 жыл бұрын

irf 3205 for power suply

@jeanious2009 Жыл бұрын

Is that light hot?

@jerryfang5488 6 жыл бұрын

Hey bro.. Where can I get those fet for my punch 500a2??

@icenesiswayons9962 5 жыл бұрын

Jameco electronics or micro devices!

@thatguythatmann3972 5 жыл бұрын

Hey I Own A Rockford Fosgate BD 2000 Amplifier Mono Block It Don't Work I Brake Real Hard Box Bumped My Amp BOARD And Stops Working What's Wrong With It

@anthonyvolkman2338 5 жыл бұрын

Does it turn on at all? Also does it push the drivers all the way in a direction then go into protect?

@degreesdegrees-jr4eg 5 жыл бұрын

Hi can someone help me. ? I need a amp that can "play" from 0 - 5 hz I want to play say 0.6 hz with 500 - 1000 w on a subwoofer. (Just for the fun of it.) What amp can do that. How to make that amp? Thanks

@olliebaxter2402 5 жыл бұрын

All amps can drive at that frequency, it's the fact that the sub itself can't audibly "play" that frequency, it'll just move...

@aryostosantossantos1215 3 жыл бұрын

power spl pwm

@streamscreenassjackiop534 3 жыл бұрын

My fuse keep blowing. Help me how to fix it? please

@chelseynicole7606 5 жыл бұрын

I recently took apart my pbr 300x4 and there is an unused 2 prong female plug end attached to the amp board. Any ideas what it is for?

@johnmcginley4160 3 жыл бұрын

Hey bud.guiss what some one put in trash

@jason28w 6 жыл бұрын

damn it you tube isn't telling me when your live

@rscelectrical7091 6 жыл бұрын

jason28w: Glad it's not just me having the problem.

@vicvillgom4204 5 жыл бұрын

Barevids how i can contact you

@paulhoward9769 2 жыл бұрын

Hey mate...lol From the U.S. and can't find ANYONE to repair car amplifiers. Any help?!?!

@barevids 2 жыл бұрын

Post on the facebook groups

@frankrenteria4370 4 жыл бұрын

The downfall to this bad ass amps are the power terminals! The wire guage size they made for way too small. They over heat the amp. Melt the plastic on terminals. I ruined two amps cuz of the terminals being too small to fit bigger guage wire

@lazarovelazquez1002 6 жыл бұрын

ola puedes hablar en tus vídeos en español no aprendo el ingles aun

@jasonborn9394 5 жыл бұрын

1/4 screw heads lol

@gyanjatav5944 3 жыл бұрын

Ispic hindi

@ezequielgonzalez43 3 жыл бұрын

Jajaajajajajsjsksksksk. Jajajajajajajajakajakakak

@johnmcginley4160 3 жыл бұрын

Oh 💩 can't send pictures

@BASSstarlet 6 жыл бұрын

Punch 60ix...worst amplifier i've ever own.No one undesrtand back it the days, why it kept blowing mosfets over and over and over....

@icenesiswayons9962 5 жыл бұрын

Wrong speaker ohms or failing speaker coils! If you're grounding your speaker it will also blow your amp!

@pliedtka 5 жыл бұрын

Well the MOSFETs used are OK for regular A/B class, but in this case may not be optimal for D-class car amp use. And of course people abuse them constantly. For some reason I was never a Rockford fan, and this amp is not special. I liked the old Phoenix Gold amps and a few other brands but that was some 30 years ago when nobody even though of a few kilowats D-class amps and clipped waveforms in audio files - a very kosher way of making music. When I heard Earl Zausmer BMW in 94, I was literally in car audio heaven, yes tube amps in the car.