Pioneer SX-1980 regulator - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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
Reply
 
Thread Tools Search this Thread
Old 31st March 2008, 06:40 PM   #1
diyAudio Member
 
Join Date: Mar 2008
Location: Midwest
Default Pioneer SX-1980 regulator

I am in the process of repairing a SX-1980 regulator board. It is well cooked, especially the pass transistors. The -80v had been previously been repaired and still working. The +80v is open and it too, had been previously repaired.

I read some older posts by EchoWars and the nightmares he encountered repairing a SX-1980. Question to him or others, with the knowledge and hindsight you gained by working on this beast, would you replace the existing semis or redesign the regulator board to work with newer and higher voltage components? The original pass transistors are rated at 60 or 80 volts and that seems like a problem waiting to happen with an input of over 100 volts.

Regardless of what path I chose, I plan to replace most of the electrolytics with higher voltage and hi-temp units. I am also thinking about installing a small 3cm fan to help dissipate the heat on this board. (unless someones thinks that's a bad idea.) Any ideas or suggestions would be greatly appreciated.
  Reply With Quote
Old 31st March 2008, 06:41 PM   #2
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver
I have moved this to the Solid State area. Troubleshooting is for forum problems.
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pioneer SX-1980 trace59 Swap Meet 7 9th January 2008 07:06 PM
Pioneer SX-1980 Regulator Driving Me Insane! EchoWars Solid State 51 13th February 2007 10:34 PM
WTB Pioneer sx-1980 receiver mike m Swap Meet 1 13th January 2003 07:57 AM


New To Site? Need Help?

All times are GMT. The time now is 06:23 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2