MC2505, driver board

peterberlin · 2nd September 2006, 05:49 PM

Hi all

I have bought an old MC2505 with a defect driver board.

The schematics did not tell me something about the industrial part number of the transistors.

I was wondering if anyone can tell me if there is a replacement for the transistors:

Q132-070 and 132-054

Or (at the best) with a listing of replacements for all the semiconductors.

I just crawled the net without success...

Thanks in advance

Peter

djk · 3rd September 2006, 08:40 AM

132-070, NPN for outputs, MJ15003.

132-054, NPN for diff input pair, MPSA06.

Drivers are RCA 40409/40410, hard to find.

Frank J.Y. Lin · 28th December 2006, 01:15 AM

Dear Peter,

I am also an owner of mc2505.
I am looking for the schematics to replace the old electrolyte capacitors.
Do you mind send me a copy of schematics of mc2505?
Thanks for your kindness in advance.
by the way, mc2505 is a good amp, congratulations!

best regards,
Frank

2nd September 2006, 05:49 PM	#1
peterberlin diyAudio Member Join Date: Sep 2006	MC2505, driver board Hi all I have bought an old MC2505 with a defect driver board. The schematics did not tell me something about the industrial part number of the transistors. I was wondering if anyone can tell me if there is a replacement for the transistors: Q132-070 and 132-054 Or (at the best) with a listing of replacements for all the semiconductors. I just crawled the net without success... Thanks in advance Peter

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Mystery ST-70 Driver Board	Pyre	Tubes / Valves	39	23rd May 2011 02:53 AM
Adcom GFA-565 Driver Board Cancer	Numbdiver	Solid State	27	20th February 2009 03:06 AM
WTB Ampzilla driver board.	Original Burnedfingers	Swap Meet	3	30th September 2005 12:58 AM
CRT Driver Board	DonoMan	Parts	2	19th February 2005 08:26 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

3rd September 2006, 08:40 AM	#2
djk diyAudio Member Join Date: Feb 2001 Location: USA	132-070, NPN for outputs, MJ15003. 132-054, NPN for diff input pair, MPSA06. Drivers are RCA 40409/40410, hard to find.

28th December 2006, 01:15 AM	#3
Frank J.Y. Lin diyAudio Member Join Date: Dec 2003 Location: Taipei	Dear Peter, I am also an owner of mc2505. I am looking for the schematics to replace the old electrolyte capacitors. Do you mind send me a copy of schematics of mc2505? Thanks for your kindness in advance. by the way, mc2505 is a good amp, congratulations! best regards, Frank

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)