RCA 3626 power transistor from Crown amp

delapoer · 31st May 2004, 06:05 PM

I am trying to find a source of RCA 3626 power transistors to replace dead ones in a Crown DC300A power amp. Alternatively an equivalent would be good - does anyone know where I can get them?

imix500 · 1st June 2004, 03:16 AM

Have you called Crown? They have an excellent service and parts dept. If you hit a dead end I might be able to get my hands on a few.

delapoer · 2nd June 2004, 09:48 AM

No, I haven't tried Crown because I can't find the address of the UK agent for Crown - good idea though!

delapoer · 2nd June 2004, 05:05 PM

I have found out that the transistor is actually an RCA 1B05 despite reading 3626 on the can!

Centauri · 3rd June 2004, 08:38 AM

1B05 is a very obslete transistor - recommended replacement is the MJ15024.

But don't mix these with old ones - replace the whole set.

Cheers

delapoer · 3rd June 2004, 08:48 AM

Thanks a lot for the information. What is the problem with mixing the types?

Centauri · 3rd June 2004, 04:02 PM

Two reasons:

Different specifications will mean they don't share the load current evenly, and

If some of the transistors are faulty, then it can be assumed that the resultant surge when this occurred has put undue stress on the remaining units. Therefore thay are more prone to premature failure (meaning the set should be replaced even if the same type is used).

Cheers

31st May 2004, 06:05 PM	#1
delapoer diyAudio Member Join Date: May 2004 Location: UK	RCA 3626 power transistor from Crown amp I am trying to find a source of RCA 3626 power transistors to replace dead ones in a Crown DC300A power amp. Alternatively an equivalent would be good - does anyone know where I can get them?

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
Crown amps, transistor replacement (long)	Eaulive	Solid State	17	17th August 2011 03:28 PM
MIMPS? crown Transistor matching	Zero Cool	Solid State	0	8th May 2009 10:50 PM
Crown IC 150 power light	mummy	Solid State	1	8th February 2009 12:27 AM
Crown Com-Tech 210 Power Amplifier Crown Com-Tech 210	tyler477	Solid State	1	31st October 2008 05:24 AM
transistor for CROWN amplifier	tom31415926	Parts	4	13th November 2007 04:44 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

1st June 2004, 03:16 AM	#2
imix500 Proud Union Member diyAudio Member Join Date: Mar 2004 Location: Putnam, NY	Have you called Crown? They have an excellent service and parts dept. If you hit a dead end I might be able to get my hands on a few.

2nd June 2004, 09:48 AM	#3
delapoer diyAudio Member Join Date: May 2004 Location: UK	No, I haven't tried Crown because I can't find the address of the UK agent for Crown - good idea though!

2nd June 2004, 05:05 PM	#4
delapoer diyAudio Member Join Date: May 2004 Location: UK	I have found out that the transistor is actually an RCA 1B05 despite reading 3626 on the can!

3rd June 2004, 08:38 AM	#5
Centauri diyAudio Member Join Date: Jul 2003 Location: Newcastle, Australia	1B05 is a very obslete transistor - recommended replacement is the MJ15024. But don't mix these with old ones - replace the whole set. Cheers

3rd June 2004, 08:48 AM	#6
delapoer diyAudio Member Join Date: May 2004 Location: UK	Thanks a lot for the information. What is the problem with mixing the types?

3rd June 2004, 04:02 PM	#7
Centauri diyAudio Member Join Date: Jul 2003 Location: Newcastle, Australia	Two reasons: Different specifications will mean they don't share the load current evenly, and If some of the transistors are faulty, then it can be assumed that the resultant surge when this occurred has put undue stress on the remaining units. Therefore thay are more prone to premature failure (meaning the set should be replaced even if the same type is used). Cheers

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