pass labs x2-1

mikojat · 2012-01-10 1:14 pm

Hi Miguel, let's do it...

miguelnoda · 2012-01-10 2:01 pm

Hello I send some photos like this on my pass labs PCB-1 X2

An externally hosted image should be here but it was not working when we last tested it.

Audiofanatic · 2012-01-10 2:05 pm

Miguel

You are not that far away.
Spain is like in my backyard

it's still Europe.

Take your time.

Regards,

José

Audiofanatic

Audiofanatic · 2012-01-10 2:19 pm

pic

Pic of the PCB form Miguel.

Audiofanatic

mikojat · 2012-01-10 2:57 pm

Hi Audiofanatic, if I'm not wrong those resistors (3k3) connect to Drain IRF610 and it's serve as the loads for the IRF610. If mosfet's damage it's possible make resistor's overload and burn it. Just replace with new resistor, if it's burn again...replace those Fet's. It's cheap enough... What a Miguel doing this before?

generg · 2012-01-10 6:19 pm

I have a picture from Miguel that shows a shorted Zener, that makes it difficult to say if its ver0 or ver1.

one possibility could be,..... someone repaired ver1 with the circuit of ver0....

and caused some problems....

only a possibility

unfortunately I can for unknown reasons not upload the picture...

Audiofanatic · 2012-01-10 6:34 pm

This one?

Pic from Miguel.

Audiofanatic

Zen Mod · 2012-01-10 7:37 pm

typical proper disposal candidate case......

Owner of Official PL Disposal Facility

:rofl:

generg · 2012-01-10 8:23 pm

maybe Miguel has an "old" board where a new version was implemented..

generg · 2012-01-10 8:33 pm

hi audiofanatic,

would you tell Miguel in Spanish to look for the Revision number on the board? compared to the service manual it should be ver1 and not ver0....

one resistor right and 12 Zener (one shorted)

riccoryder · 2012-01-10 8:45 pm

I don't know about this particular board, but in general quite often besides running wires to replace the function of damaged/lost traces, adhesive-backed copper tape may work. It is commonly available on the auction sites. Just trim as needed with scissors.

miguelnoda · 2012-01-10 9:18 pm

An externally hosted image should be here but it was not working when we last tested it.

this is what is recorded in the PBC and the IRF9610 (Q5) has
soldier a zener and a resistor that is not on the circuit, nose if it is an improvement because they seem original components.

generg · 2012-01-10 9:31 pm

Now it seems to be clear... It is rev1

The picture is here

http://tinypic.com/view.php?pic=307thlh&s=5

miguelnoda · 2012-01-11 9:00 pm

Hello I see that it is almost impossible to get the pcb of the preamplifier.
My question is will the board could get any updates
X2 or X3. It also occurred to me to ride this frame something today
but I really like this before as it sounds, I could advise.
a greeting

Nelson Pass · 2012-01-11 11:09 pm

It's not too difficult to simply get a repair, the damage you have described
is largely cosmetic to the board. Are you willing to spend a lot of money
to have a fresh looking board, or do you just want it to sound good?

Audiofanatic · 2012-01-11 11:59 pm

If I remember correctly the amp still works but has a constant hiss/noise in the one or both channels.
Miguel didn't reply on my last e-mail to him regarding this question.
I offered him a complete repair for free just to because I want this amp to remain original and because he also lives in Europe.

It's up to him now!

Miguel if you want to keep it in Spain, make sure it's fixed by a technician with great appreciation for high-end equipment

Mail me if you need my help.

Regards,

José

Audiofanatic

mikojat · 2012-01-12 3:03 am

Audiofanatic said:
Miguel if you want to keep it in Spain, make sure it's fixed by a technician with great appreciation for high-end equipment

Audiofanatic

Or Do It Yourself, it's fun

Audiofanatic · 2012-01-12 11:39 am

Amen !

mikojat said:
Or Do It Yourself, it's fun

Audiofanatic

miguelnoda · 2012-01-12 2:01 pm

pass labas x2-1

Thanks Jose, I think that I can fix, I ordered some parts
but I have some doubts as the bridge on the zener or bottom of pcb
the transistor Q5 is a zener and a resistor, I would like to know naps components are an improvement or I move through the circuit?
thanks.
http://i42.tinypic.com/20hmuyf.jpg

Zen Mod · 2012-01-12 2:07 pm

Miguel

if you're not confident in what you are going to do , you can make much greater damage to preamp .
leave that to someone who is skilled in these things
X2 deserve that

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