Question about Legacy LA838 Car Audio Amplifier

2 Answers

Smoking Amp/Fuse Blowing

Ok im having similar problems as you seen up above. im not good with electronics as far as checking the B+ thing lol but my amps doin the same thing. i was intending to get my compacitor hooked up but i got set back b/c of money probs. So i had it for about 1 month and now its blowing my fuses and smoking (in amp that is). its smoking from the battery hook-up side.

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Amp blows fuses when i have hard bass to it some is ok

Posted on Jan 23, 2007

  • Bryan Barnes Jan 24, 2007

    i would redo your wires in the car i have not done it yet but if anyone else knows let me know


  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 20 answers of more than 400 characters.


    An expert who has answered 20 questions.

  • Expert
  • 72 Answers

Sounds like you may have a shorted switching Transistor in the switch mode power supply causing a short to ground. If you are technical enough. Remove power remove cover and do a continuity test on the transistors on the heatsink. non of them should read zero resistance between the three legs. in all connection configuration you use to hook up your meter. If one or Two or even all of them do you must replace with proper part.

Posted on Aug 03, 2006


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

So my dog chewed up the power cord to my xbox 360 while it was plugged in. I bought a brand new power supply but when I plug it in and try to turn it on nothing happens. No lights, no nothing. Could the...

lol, did the dog have a black nose, & whiskers missing.
& a bad case of
that's a new one on me, but a funny one.
you say you bought a new power supply? was that the full thing or just part of it?
if part of it & it was the plug side, then silly question but have you checked the fuse & wall socket....
if thats all good, the next you'll wanna check the top of the capacitors inside the console, swipe your finger over them, they should be perfectly flat & not domed up in any way, if they are replace with EXACT same type, some people think" if i put a bigger size capacitor in it will stop it blowing so easy again" NOT TRUE.
look for the on board, & smell of burnning..
good look

Jan 23, 2014 | Video Game Consoles & Games

1 Answer

Battery getting drained

great post and first to do fuse checks, for phantom drains.
G16 or J18 engine????
very good work. did you look at car in 100% dark,. all doors open , hood and trunk? called dark current checks.
and you are correct ,most fuses have many loads. some are 20 or more. (now windows ,usually)
DOME (im logged in to so can you.....
Dome is doom, LOL called fuse #8 by suzuki.
a RED feed wire..... then white....

TCM, interior lights,trunk light,Radio, keyless,Clock and ECM

a real FSM make this far more easy, especially old cars.
and DC amp clamp meter 100x more easy. has the full set if schematics.

Dec 17, 2013 | 2002 Suzuki Esteem

2 Answers

Main fuse keeps blowing

You stated your loadtested battery? Try another known good battery as I have seen very odd things happen with these maintainence free batterys sometimes such as polarity swapping. This would cause the same main fuse blowing as if you were hooking the battery up backwards.Then begin by un plugging the ignition switch. If fuse blowing stops the problem is in the harness somewhere between the fuse and ign. switch. Possible wire pinched or rubbed through and grounding. From the ignition switch the main fuse voltage goes to the distribution(common) side of the fuse box. Inspect the wiring from the switch to the fuse box. This problem has to be pre fuse box in location otherwise the lower amperage circuit fuse in the box would be blowing. Good luck!

Dec 30, 2012 | 2007 Suzuki GSX-R 600

3 Answers

My 2006 nissan altima radio just stoped working one day i seen it smoking then it just shut off got to my house seen that the size 15fuse busted changed it and it came back on bt now there is no sound when...

Everything is not working. Check for power and ground at speakers. If not there check at amp or head unit. If there's no power there replace amp or head unit. Probably need to replace whatever was smoking before it catches fire. Listening to music will be the last thing on your mind if that happens.

Dec 12, 2017 | Cars & Trucks

1 Answer

1993 Bighorn Blowing Tail Light Fuse

Do you have a trailer? does it blow the fuse when useing the trailer? Other wise is there any accident damage to the vehicle? these would be the first places I would look

Jun 28, 2012 | Isuzu Trooper Cars & Trucks

1 Answer

Background 1. Cluster goes wacky when driving bouncing like crazy sometimes. If I tap the cluster it straightens up. (loose connection maybe) 2. Both front windows do not work, 3. Passenger side brake...

there are two things on that model year that it most likely will be one is the speed sensor has gone out and that will be located on the drivers side near the back of the transmission the other possible cause i have seen is the cluster it self

Sep 07, 2011 | 1999 Ford Windstar

1 Answer

Radiator cooling fan 30 amp. fuse keep blowing

The fan may run with jumper wires but if it''s blowing the 30 Amp Maxifuse it's needs a new or used fan motor.It's pulling too many amps.I have almost never seen a fan relay concern.Only other thing you may check is the wiring down near the fan shoud I have seen the 2 wires get loose from the conduit & melt onto exhaust manifold.Hope tHis Helps

Apr 26, 2009 | 2002 Saturn Sl

1 Answer

Home Amp fuse keeps blowing

This usually happens when there is a problem with the main power supply and is relatively rare. If you can post the make and model, I can give you some things to check if you are somewhat familiar with electronics.


Feb 19, 2009 | Pioneer Audio Players & Recorders

2 Answers

Rockford p5002 amp is smoking...

Completely disconnect the amp and remove the cover. Look for anything that is discolored or burned.

Did you have one sub on each channel before the sub blew?

Jan 23, 2008 | Rockford Fosgate Punch P5002 Car Audio...

4 Answers

AMp keeps blowing fuses

Hi You can refer to my detailed solution above...if you still have issues please feel free to contact.


Feb 15, 2007 | Kenwood KAC-7202 Car Audio Amplifier

Not finding what you are looking for?
Legacy LA838 Car Audio Amplifier Logo

Related Topics:

1,113 people viewed this question

Ask a Question

Usually answered in minutes!

Top Legacy Car Audio & Video Experts

Tygh Duval
Tygh Duval

Level 2 Expert

300 Answers


Level 1 Expert

24 Answers

Robert Little

Level 1 Expert

25 Answers

Are you a Legacy Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides