Denon AVC1A Transistor cross reference

ben12345 · 18th February 2009, 06:30 PM

I'm trying to repair an old Denon AVR-A1 home theater amplifier.

So far, I've actually got the beast to power up, although 'protection' is shown.

The amplifier output transistors were s/c, which also blew the drivers too. Problem is that they are all obsolete as far as I can find... Neither RS or Farnell stock the main outputs or the others I need, and I even tried mouser and digikey.

Can any of these be replaced with more modern parts?

The main outputs are 2SD1975 / 2SB1317 Pair

Driver section
2CD2004 / 2SB1328 Pair
2SC3423
2SA1360

Misc
2SC1841
2SA970
2SB1328

Cheers,
Ben

ben12345 · 18th February 2009, 10:18 PM

Hmm, Looking through some datasheets, it looks like C5200/A1943 might do the job for the output stage.

Any thoughts?

burbeck · 18th February 2009, 11:12 PM

hi ben
try http://www.dalbani.co.uk
or http://www.cricklewoodelectronics.com
great companies

ben12345 · 19th February 2009, 08:15 AM

Thanks Bob,

Nikko had the lot! They'll definately be going in my bookmarks.

Cheers,
Ben

burbeck · 22nd February 2009, 02:04 AM

glad you got sorted, i been using them for years specialise in japanese semis

18th February 2009, 06:30 PM	#1
ben12345 diyAudio Member Join Date: Feb 2006 Location: UK	Denon AVC1A Transistor cross reference I'm trying to repair an old Denon AVR-A1 home theater amplifier. So far, I've actually got the beast to power up, although 'protection' is shown. The amplifier output transistors were s/c, which also blew the drivers too. Problem is that they are all obsolete as far as I can find... Neither RS or Farnell stock the main outputs or the others I need, and I even tried mouser and digikey. Can any of these be replaced with more modern parts? The main outputs are 2SD1975 / 2SB1317 Pair Driver section 2CD2004 / 2SB1328 Pair 2SC3423 2SA1360 Misc 2SC1841 2SA970 2SB1328 Cheers, Ben

18th February 2009, 11:12 PM	#3
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	hi ben try http://www.dalbani.co.uk or http://www.cricklewoodelectronics.com great companies __________________ regards bob

22nd February 2009, 02:04 AM	#5
burbeck diyAudio Member Join Date: Aug 2004 Location: Ratae Coritanorum	glad you got sorted, i been using them for years specialise in japanese semis __________________ regards bob

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18th February 2009, 10:18 PM	#2
ben12345 diyAudio Member Join Date: Feb 2006 Location: UK	Hmm, Looking through some datasheets, it looks like C5200/A1943 might do the job for the output stage. Any thoughts?

19th February 2009, 08:15 AM	#4
ben12345 diyAudio Member Join Date: Feb 2006 Location: UK	Thanks Bob, Nikko had the lot! They'll definately be going in my bookmarks. Cheers, Ben

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