MTX Thunder 81000D is Blown.. Sell it? Fix it? or Trade to MTX for TA7801?

[ampjunkielikeme 10+ year member]

can you get a pic of the board? to see whats wrong with it?

 

[shimmyz 10+ year member]

can you get a pic of the board? to see whats wrong with it?

Sure, Give me a couple minutes to take a couple. I already have the top off

 

[jco1385 5,000+ posts]

i blew mine (1501d/same thing) and 2002xlt got it in a trade for a pair of tens he had.

he sent it in and said most everything was shot! lol. because of loose rca's //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[shimmyz 10+ year member]

Counting from the top right of the pic. The 1st, 4th, and 8th FETS are bad. It also looks to be tiny resistors below the 4th and 8th fets. They look burnt also. I don't know much about this kind of stuff but everything else looks fine.

 

[jco1385 5,000+ posts]

that should be a fairly cheap fix. the caps aren't swollen so thats good.

how did you kill it?

 

[shimmyz 10+ year member]

that should be a fairly cheap fix. the caps aren't swollen so thats good.
how did you kill it?

I hooked it up and the light came on. So I was happy about that. I didn't have a manual at the time and I'm not familiar with how these amps work. I hooked it up 2ohm on 1 channel. The volume was kinda low(not much bass). I knew It was 2ohm stable. So I bridged it at 2ohms. I now know its only stable at 4ohm bridged and 2 ohm stereo or whatever you want to call it (these MTX speaker connections are not what I'm used to). It worked for about 20 minutes at medium volume. It just stopped working and a little bit of smoke.

The amp still powers up just no sound.

 

[jco1385 5,000+ posts]

I hooked it up and the light came on. So I was happy about that. I didn't have a manual at the time and I'm not familiar with how these amps work. I hooked it up 2ohm on 1 channel. The volume was kinda low(not much bass). I knew It was 2ohm stable. So I bridged it at 2ohms. I now know its only stable at 4ohm bridged and 2 ohm stereo or whatever you want to call it (these MTX speaker connections are not what I'm used to). It worked for about 20 minutes at medium volume. It just stopped working and a little bit of smoke.
The amp still powers up just no sound.

thats dead wrong bro. no offense.

this is a mono amp (1 channel). what you see as 2 ch is just the ease of hooking up more than one sub (the 2 +'s = 1 + inside...ect). this is a mono amp stable at 2 ohms so something else had to happen.

 

[dman4486 5,000+ posts]

lol....an 81000D in stereo:laugh:

 

[jco1385 5,000+ posts]

***

 

[jco1385 5,000+ posts]

maybe you had it modded and you had it at 1 or below and were standing on it for a while (or low volts) or you had the compression (protect) circuit off (little tiny white button on the left) and the above happened

 

[jco1385 5,000+ posts]

http://www.mtx.com/caraudio/archive/2004amps/Thunder_421D_801D_1501D.pdf

pg 4. shows the compression circuit. but thats to protect subs not the amp. so thats not it either

 

[jco1385 5,000+ posts]

actually its this one:

http://www.mtx.com/caraudio/archive/NDM186.pdf

but it's the same ****.

 

[GAM3OVR 5,000+ posts]

maybe you had it modded and you had it at 1 or below and were standing on it for a while (or low volts) or you had the compression (protect) circuit off (little tiny white button on the left) and the above happened

i think you nailed it jco

I've seen somebody do this once, similar results

 

[GAM3OVR 5,000+ posts]

the 1 ohm and low voltage part, no clue on the button thing.

 

[jco1385 5,000+ posts]

idk much about the button either. i just know its there. thats why we have mtx website archives

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