help with my Xtant 1001d

[91h22a]

Hello all I have an xtant 1001d amplifier and it has very low sound output so I determined this must have something to do with the muting circuit. So i have traced the remote lead and found what appears to be a missing capacitor in location C53. The leads remain and look like the cap has broken off.

Now I purchased this amp broken (all jumpers in correct locations) and as all of you know there is really no help when it comes to xtant. So I hope to get some good advice here from some repair veterans.

I am an electronics tech but only for about a year and I only work on lcds plasmas blu rays but never without schematics! So my limited experience leaves me lost and I have all but begged (well maybe a little) Xtant for schematics. Any help would be greatly appreciated and any advice on this amp would also be welcomed.

I am determined so no suggesting sending it to a repair facility

[Perry Babin]

Are the gain jumpers in the +20dB position?

Are the gain pots at the maximum position?

With 1v in, what is the output voltage on the speaker terminals?

[91h22a]

Mr. Babin, thanks for the prompt response. I hooked a 1v signal to the amp with the signal jumper at the +20db setting and the gain turned to max and got something like 1.5volts at the speaker terminals. Then I did some looking all over the amp and found the large iron core transformer to have 6 out of 16 (or 20 i am not certain) of the legs broken just slightly so the only way I found them were to pry them away from the pcb. So I cleaned off the coating and soldered the broken leads and now i am seeing something like 44 -55v (depending on the gain). So Mr. Babin what if any suggestions do you have...the amp seems to be producing much more power but I am still curious to hear your thoughts before throwing it into the car. Again thanks for your expertise and assistance.



David

[Perry Babin]

It sounds like you found the problem. Reinstall it to see if there are any other problems.

[Westerp]

I would hook it up to a couple of resistors around 8 ohm 30 watt with a
small speaker and 50 ohm in series across then feed it a signal first. Putting it
back without being sure it works as intended could cost you your speakers.
That voltage at the output could be anything.

[Perry Babin]

It appears to be working. With 1v in, it was producing 40+v on the outputs.

[91h22a]

Thanks gentleman for your input!

Mr. Babin thanks to you especially because I have your DVD for Basic Car Electronics and it certainly helped me with this endeavor.

The amp seems to be working well after a 10hr burn in at medium levels and I am happy to say I feel confident enough to incorporate this amp into my vehicle.

Thanks again and I hope I can help you in return sometime.


David

[darylf]

Hey do you still have your x1001d? If so you could you look up a couple of vaules for me?

thanks

[91h22a]

I do. Let me know what you need and I will get back to you as soon as I can.

[darylf]

Great, Thank you so much.

Im in need of these values.

Q25 last on on the top row of fets.

I need to know what Q35 is, its about 3 inches below to the left of Q25

and Q3-11. left side of the fets. I have IRFz44N, but Im not sure they are the correct fets.

Also my board is PCB-1001d

And has no fans on the heat sink.

thanks again.
Daryl