hardman cardon AVR20II - 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 9th January 2009, 07:41 AM   #1
diyAudio Member
 
east electronics's Avatar
 
Join Date: Jan 2006
Location: Athens GREECE
Default hardman cardon AVR20II

ok .....
case :hardman cardon AVR20II
symptom : having a baby ...... at home .... resulting half a glass of coke inside the amp while operating ( !!!!!!! )

only outs , drivers , a few resistors and a few caps .... nothing that can not be faced in any normal lab

though A1859A and C4883A drivers do not exist in the greek market so i replaced them with mje 15033-32 and the extreme semiconductor 2sc 4137 was repalced with a bd 135 .....

finally a resistor network of 10 R and 442 R that was responsible for seting the bias was replaced with a 390R resistor and 100R multiturn .....to be able to set the bias propely

amp is working just fine any comments ???

thank you
__________________
SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
  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
Advice needed : Cambridge audio 740C or Harmon Cardon 990 ? lduarte1973 Digital Source 4 24th May 2009 03:16 PM
RRREALLY NEED SCHEMATIC FOR H/K AVR20ii ostie01 Solid State 0 30th March 2005 07:19 AM


New To Site? Need Help?

All times are GMT. The time now is 06:46 AM.


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