titanium 900.7 power supply

[maddoctor]

Hi Guys,Never had an amp this nice just starting to appreciate it when when she just quit.Took it to a repair shop they tried and said the replacement transistors just blew again.Took it to a friends shop and he emailed me to say........Mike,

Re: Phoenix Gold Titanium 900.7 amp.

I took apart the amp you brought in last week and diagnosed the problem to the DC to DC converter circuit. The amplifier section is O.K.

The last technician that worked on it had replaced 5 surface mount transistors which are all burnt up. I noticed that the part #'s of transistors he had replaced do not match with the originals that were not de-soldered from the board. In order for me to repair the amp, I need either a schematic or a parts listing of the OEM transistors that were replaced by the previous technician.

I need the manufacturers part #'s of Q172, Q171, Q170, Q169, Q155, Q154, Q152, Q151.

Some of the transistors listed above were not replaced, but the part # written on the top of them are slightly distorted/scratched.

See what you can get me........either a service manual or schematic or OEM part #'s for the transistors listed above etc. I always take a picture of a customer's circuit board before I remove or replace any defective components; this way I can always reference the picture in case I forget which parts go where etc.

If the transistor is burnt up & I can't read the OEM part #, I will not guess & solder a substitute on the board, just like the last technician did..............I would either get a schematic or another working identical amp to read the correct part #'s etc.

Erik.

[SLICK]

PM this guy right here : ERIC D ...<-- He might be able to help you ...

[Bfowler]

bogart has taken apart his share of 900.7's too

good luck!

[stipud]

Not sure if it helps, but I do have some high res pics of the internals here:
http://photo.stipud.com/v/stereo/ti9007/

[audiogood]

While these amps are known to have issues ... Power sulply failers is not one of them ... If you look for one with an bad ch you would be able to rob the power transistors out of it ... Also there is an guy with an 900.7 here ... But he wants $200 cash for it and it has Ben robbed of parts .... But it has the power suply transistors.... You need ..

[ttocs]

sure is nice of you to pull up a post from over a year and a half ago to help.

[dvnt88]

PM this guy right here : ERIC D ...<-- He might be able to help you ...

Or ...You can pm Valeks1 on the Phorum since he still works on PG amps and knows his stuff. His website is: www.altser.com
and every repair comes with a 90 day warranty. Either or person is a great choice.

[audiogood]

Yeah ... Part bord ....part not looking how old the post is ... Lol... Who knows the guy may still have the amp ... And maybe still looking to fix it ... LOL

[audiogood]

Also I was not an member an year and half ago .. as I would have helped then LOL.. I did not know about the phorum till I started looking for parts off the ti600.2.... LOL

[maddoctor]

Yes Mike's still here with his broken 900.7 and I really appreciate the replys.I will try your ideas.On another subject why wont my Alpine CVA1003 communicate with my DALP100 xm adapter over the ai-net,i have to go xm1000 tuner audio left /right srtaight to aux input to get sound pain in the ass to change to tuner to select channel and then back to aux to get sound.

[ttocs]

1003 is an old unit, I can't remember if we had satalite radio back when I was selling it but I don't think we did........

[shaheen]

This post makes me worry about the 900.7 I have in my cupboard. I think it needs a dust out.....