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Old 18th June 2011, 09:39 AM   #1
diyAudio Member
Join Date: Jun 2011
Default Proton D1200 Replacement Transistors

Hello i have a proton D1200 there the power transistors had blown up
Anyone know a replacement for 2SC3519A , 2SA1386A and 2SD669??
I have problem to find them her i sweden. And do i have to cange on
both channels even if the other channel is ok?
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Old 18th June 2011, 11:56 AM   #2
Join Date: Nov 2006
Location: Torpoint
All three transistors are available from http:\\Cricklewood Electronics CCTV and Electronic Components and they will post to Sweden.
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Old 18th June 2011, 10:04 PM   #3
jaycee is offline jaycee  United Kingdom
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Join Date: Apr 2004
Location: Norwich, UK
Onsemi NJW0281/0302 could work well for the outputs, or Fairchild FJA4213/FJA4313. The 2SB649/2SD669 should still be fairly easy to get.

Do not be tempted to buy transistors from eBay, especially the Sanken ones. You will almost certainly get fake parts.
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Old 18th June 2011, 11:08 PM   #4
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Join Date: Jan 2006
Location: Athens, GA
Be sure to match the hfe group with the originals: O, P, or Y. Also recommend replacing drivers and checking emitter resistor for value. has first two, last one out of stock. If you can find exact replacements, no need to change other channel, it is unaffected by the fault. If need to use different replacements, I would for symmetry.

Last edited by DreadPirate; 18th June 2011 at 11:14 PM.
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