carver m500-t schematics

morpheus82 · 17th April 2007, 07:56 AM

hi guys, i've found a nice carver m500-t but it's faulty, 4 transistors are blown an i can't see the model of the transistors, does anyone has experience with it?i need at least a schematic to try to repair it...thanx a lot in advance!

morpheus82 · 17th April 2007, 02:49 PM

anyone?maybe someone who knows the transistors inside the amplifier...please!

toddyaudio · 18th April 2007, 04:12 AM

Those transistors are long obsolete, most likely NEC B705 and NEC D745. Carver had a service bulletin to replace them with 2SA1302 (also almost obsolete so use 2SA1943) and 2SC3281 (also almost obsolete so use 2SC5200). The new transistors are a different case style so you will have to get creative when mounting the new transistors. I have used these transistors in a M500 without any problems.

morpheus82 · 18th April 2007, 06:47 AM

thanx a lot mate!but these are final transistors, but on the same heatsink there are also smaller transistors, and they're blown...maybe i'll post a picture asap..do you have a service manual?can you send it to my email?and do you think i have to chack other components?

morpheus82 · 23rd April 2007, 09:54 AM

ok, transistors found, but the name i a fabric name! namely
A1111
C2591
how can i know which replacement to use?

17th April 2007, 07:56 AM	#1
morpheus82 diyAudio Member Join Date: Oct 2004	carver m500-t schematics hi guys, i've found a nice carver m500-t but it's faulty, 4 transistors are blown an i can't see the model of the transistors, does anyone has experience with it?i need at least a schematic to try to repair it...thanx a lot in advance!

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
Carver M500-T Unit fuse	other3	Solid State	4	26th October 2008 09:32 AM
Carver M500 power amp start up problems.	AMV8	Solid State	7	13th May 2008 12:59 PM
Carver M500 Power Supply	jpanwell	Solid State	5	27th November 2007 04:56 AM
Carver TFM Schematics?	trezza	Solid State	2	9th January 2005 03:20 PM
Schematics Carver	leiade	Everything Else	3	7th November 2002 10:06 PM

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

17th April 2007, 02:49 PM	#2
morpheus82 diyAudio Member Join Date: Oct 2004	anyone?maybe someone who knows the transistors inside the amplifier...please!

18th April 2007, 04:12 AM	#3
toddyaudio diyAudio Member Join Date: Jul 2006	Those transistors are long obsolete, most likely NEC B705 and NEC D745. Carver had a service bulletin to replace them with 2SA1302 (also almost obsolete so use 2SA1943) and 2SC3281 (also almost obsolete so use 2SC5200). The new transistors are a different case style so you will have to get creative when mounting the new transistors. I have used these transistors in a M500 without any problems.

18th April 2007, 06:47 AM	#4
morpheus82 diyAudio Member Join Date: Oct 2004	thanx a lot mate!but these are final transistors, but on the same heatsink there are also smaller transistors, and they're blown...maybe i'll post a picture asap..do you have a service manual?can you send it to my email?and do you think i have to chack other components?

23rd April 2007, 09:54 AM	#5
morpheus82 diyAudio Member Join Date: Oct 2004	ok, transistors found, but the name i a fabric name! namely A1111 C2591 how can i know which replacement to use?

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