Harman Kardon 690i Funky Tuner Board - Page 3 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

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
Thread Tools Search this Thread
Old 12th February 2012, 04:14 AM   #21
diyAudio Member
Join Date: Jul 2011
Location: Massachusetts
Not seeing 44v coming into the tuner board connection, I ohmed the line to the circuit side of the main board and discovered an open trace under the soldermask. It had vaporized for a good 1/2 inch and was barely visible.
I installed a jumper and then the tuner came to life.
Not sure what caused this line to burn, but the receiver has been running for an hour, with no sign of overheating. I'll run it for another day to be sure before giving it back to the owner.

Thanks for your help Nattawa and Rain Dog!
  Reply With Quote
Old 12th May 2012, 03:02 AM   #22
diyAudio Member
Join Date: Jul 2011
Location: Massachusetts
Sorry folks, I know how much time has lapsed. I had put this project aside for more pressing jobs. So I finally found the cause: a burned and open trace on the bottom side of the main board. It had been hidden by a wire bundle. Not sure why it burned, but I jumpered it and the receiver now works great!
Which reminds me again to always check for the simple stuff first.
  Reply With Quote


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
Harman Kardon HK6600 xinix Solid State 11 4th February 2015 05:51 AM
Harman Kardon A50K rknize Tubes / Valves 11 24th December 2011 05:44 AM
AVR3000 Harman Kardon jo2bo Chip Amps 7 19th January 2007 04:54 PM
For Sale Harman Kardon T60 Turntable / Harman Kardon Cd491 Cassette Deck electric blue Swap Meet 1 25th August 2006 11:36 PM
Harman Kardon amp Ilianh Solid State 10 26th December 2005 03:27 PM

New To Site? Need Help?

All times are GMT. The time now is 01:18 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2