Harman Kardon 690i Funky Tuner Board - Page 3 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

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
Reply
 
Thread Tools Search this Thread
Old 12th February 2012, 05:14 AM   #21
diyAudio Member
 
Join Date: Jul 2011
Location: Massachusetts
Success!
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, 04:02 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

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
Harman Kardon A50K rknize Tubes / Valves 11 24th December 2011 06:44 AM
AVR3000 Harman Kardon jo2bo Chip Amps 7 19th January 2007 05:54 PM
For Sale Harman Kardon T60 Turntable / Harman Kardon Cd491 Cassette Deck electric blue Swap Meet 1 26th August 2006 12:36 AM
Harman Kardon amp Ilianh Solid State 10 26th December 2005 04:27 PM
Harman Kardon HK6600 xinix Solid State 6 16th October 2005 05:02 PM


New To Site? Need Help?

All times are GMT. The time now is 07:20 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