MS-2125 "Disaster" Help !!!!

Fenice · Post by **Fenice** » Mon Jul 05, 2010 4:17 am

Hy, I'm a new member from Italy...

I have a glorious Phoenix Gold MS-2125 board rev C that had multiple damages...

I have replaced all power Mosfets of the right side...all imput caps....all rail caps, some resistors and diodes...

Yesterday I tried to power it...

AHHHHHH !!!!!!

Right side: the two internal leds is on
Left side : dead...

Green power led : off !!!!
Yellow led: ON !!
Red overloal led : off

Left clip red led : off
Right clip red led : ON !!!!

What can I do ?

I don't know from where to start !!!

Thank in advance to all !!!!

Post by **ttocs** » Mon Jul 05, 2010 5:00 am

it would help alot if you can take pics of everything you have, the more detailed the better. We have some people here that can help but the more info you give the better.

welcome to the phorum....

Fenice · Post by **Fenice** » Mon Jul 05, 2010 5:34 am

OK !!

How can I up the pics ?

Post by **ttocs** » Mon Jul 05, 2010 6:01 am

you will need to post them to a photo hosting site. Cardomain, photobucket, ect, there are a number for free then just cut/past the link.

Fenice · Post by **Fenice** » Mon Jul 05, 2010 6:04 am

Thank You very much !!!!!!

U are really kind !

Post by **ttocs** » Mon Jul 05, 2010 6:07 am

Don't let me fool you I was just unable to sleep at all last night. (insert sleep smiley)

Fenice · Post by **Fenice** » Mon Jul 05, 2010 6:12 am

Your insomnia = our salvation!

Fenice · Post by **Fenice** » Mon Jul 05, 2010 6:28 am

..........other problem :

the two thermal resistors....MISSED !!!!

Have you got the code to buy replacement ??

Thank U again...

Post by **ttocs** » Mon Jul 05, 2010 6:39 am

if they happen to be 10k thermistors I got ya covered, if not then we will start a search.

Post by **joerg** » Mon Jul 05, 2010 6:49 am

Fenice wrote: the two thermal resistors....

Welcome to the forum!

I might have those parts! I could just take it out off one of the spareboards i have and sent them to you! I´ll post pics tonight!
They will ship out from austria.

marko · Post by **marko** » Mon Jul 05, 2010 7:26 am

what was wrong with the amp before work was carried out? how many amps is the amp pulling on idle? looks like you have issue on the left side..

Post by **joerg** » Mon Jul 05, 2010 10:42 am

Are the parts marked in the picture below, the parts u´re looking for?
If so let me know and i´ll help ya out.

Fenice · Post by **Fenice** » Mon Jul 05, 2010 11:26 pm

Yes....these are thermal resistors I need...

Can you sell them to me ?

Fenice · Post by **Fenice** » Mon Jul 05, 2010 11:30 pm

To Marko :

Hy !

The amp came to me in desperate conditions from a person who sold me for 50 Eur....

All mosfets of right side burned....

Board ruined and minor damages.....

My dream is to reanimate it !

Fenice · Post by **Fenice** » Mon Jul 05, 2010 11:55 pm

Here the photos of my 2125.....

http://s1014.photobucket.com/albums/af2 ... C04206.jpg

Post by **joerg** » Tue Jul 06, 2010 1:29 am

Fenice wrote:Yes....these are thermal resistors I need...

Can you sell them to me ?

I´ll take them out of the board and ship them to you!

Please PM me with your address.

Greetz
Joerg

Fenice · Post by **Fenice** » Tue Jul 06, 2010 1:38 am

Message sent......

Thank You !

jbob0124 · Post by **jbob0124** » Tue Jul 06, 2010 4:09 pm

That board looks like it got beat up pretty bad.

Fenice · Post by **Fenice** » Tue Jul 06, 2010 10:43 pm

Yeah...really bad......the previous owner had not respect this marvellous....

I hope to reanimate this piece of history !

but not easy...

Fenice · Post by **Fenice** » Wed Jul 07, 2010 12:29 am

Using a 100 ohm resistor in place of thermal res yellow led go off and

power green led light on !!!!!!!!!

....but amp "eat" a ton of current !!! (4-5 ampere)

Have tested all resistors on both channel and are all ok !

Leds are ok

Transistors seems to be ok.....

UFF !!!! so if all components ok...why right channel CLIP and left channel DEAD ?

This evening will make other tests....

marko · Post by **marko** » Wed Jul 07, 2010 7:33 am

if the boards been out then one of the outputs could be shorted to chassis, have you tried current draw with board out of sink?

Fenice · Post by **Fenice** » Wed Jul 07, 2010 8:22 am

Yeah...board is on my table........

marko · Post by **marko** » Wed Jul 07, 2010 8:26 am

something is shorted for it to be drawing high amps at idle, check all outputs again and psu fets..

Fenice · Post by **Fenice** » Wed Jul 07, 2010 8:27 am

OK !

Could be rectifiers ? (SF302 and SF302N)

Thank U

Fenice · Post by **Fenice** » Wed Jul 07, 2010 8:27 am

Information for everyone :

Thermal sensors are :

PTC 100 ohm

like this :

http://it.rs-online.com/web/search/sear ... R=496-2407

Hope this information could be useful foe someone....