need help repairing autotek mm 2000.4

[darkiid]

Hey gouys i need help fixing my amplifier autotek mm it had water damage couple of months ago bud i didnt had the chance to fix it , i wanna learn about this stuff so i wanna do it my self, plz contact me if u know how to repair it and are whiling to help me

 

[Perry Babin]

How bad is the water damage?

 

[darkiid]

I really dont .know cuz it was my brother in law ho has it by the time it wass on a convertible mustang and it had a leak on the cover so i guess it was kind of like a short... I oppened and had some burn resistors but idk if i use the right ones since the old ones where completely burn so i coildnt identify the colors

 

[darkiid]

Also there is a decorative ligh on top of the amp thats the only thing that work, so i really dont know why the rest of the amp doesnt turn on... On this,pic u can see the resistors that i change if i.well remember it was.the 530, 529, 538, nd the one next to it

also thoshe three next to each other on this second pic , ,,

...... Plz help me i really wanna learn about this,.thanks

 

[Perry Babin]

I don't see any evidence of water damage. Were the resistors burned or corroded?

 

[darkiid]

They dont seem burned cuz I replaced them but idk if they the right on, on.the first pic the damaged oner were 528, 529, 530 & the ones after 538 the one on the right side, and on thté second pic are 532, ,535 ,537 and the one next to it also on the right side

 

[Perry Babin]

Were the original resistors burned (black/brown coloring on body of resistor or board) or just corroded (gray, green or orange)?

 

[darkiid]

They in the trash since they was all black

 

[Perry Babin]

Black. That's what I wanted to know. They were burned.

With the amp powered up, what is the DC voltage on each of the 3 legs of the transistors that are connected to the resistors that you replaced. Place the black meter probe on the amplifier's ground terminal. Place the red meter probe on the point where you need to measure the voltage.

If all of the transistors for those 6 resistors have essentially the same voltage, you only need to post the voltage for the 3 legs of one transistor.

 

[darkiid]

Add me on ur messengwr nd ill connect tomorrow so we can contact faster. Darkiid-kay@hotmail.com

 

[Perry Babin]

I don't do IM. I have a very limited amount of time and get to the forums and email so I reply in the few free minutes a day that I have.

 

[darkiid]

Wts the best time to have u online? Tomorrow I make sure to follow the steps u told me and ill post more pics and give u the info u need but could u provide,me with a list of thing u need me to check for plz... Thanks

 

[Perry Babin]

I never know when I'll have free time.

 

[darkiid]

They,all have the same voltage no diferences which mean power goes thru, but idk if the diference on the resistors values are the ones affecting it, I found the original values on the resistors that I needed so ill replace them asap, nd maybe that would fix it

 

[Perry Babin]

Post the exact voltage on the 3 legs of one of the power supply FETs.

 

[darkiid]

If im not mistaking from right to left leg was .2, .23, .1..... The metter was set on , v, 200

 

[darkiid]

Couldnt fix it my self, perry how much would u charge me to repair it?

 

[Perry Babin]

Have you given up on it?

 

[darkiid]

Idk wt i can do ro fix it, i already.spend more money trying to fix it than actually.getting it fix... Plz idk wt elso to do but to gt it fix wirh someone who knows .. Some one like u

 

[Perry Babin]

Do as suggested in post #15. You can't guess. Set the meter to 20v.