Go Back   Home > Forums > > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Elekit News and products from Elekit

Reply
 
Thread Tools Search this Thread
Old 8th April 2020, 01:18 PM   #1
Wansmith is offline Wansmith  Australia
diyAudio Member
 
Join Date: Feb 2017
Default Issue developed in tu8600 re headphone plugging - help plz

Hi all

Ive had my tu8600 for two years and just today i noticed that an issue has developed.

For background - I use the amp as a permanent amp for my speakers, but occasionally plug in headphones.

The issue:
When the amp is on (but volume is turned down to zero) and i plugged in headphones today - i heard a crackle in the left channel during the action of plugging it in. Similarly, when i unplugged the headphones (with volume turned all the way down), i heard a loud pop/crackle from my speakers (again left channel). I haven't experienced this until today.

However, the amp works and sounds fine when in operation and playing through speakers, or playing through headphones where i turn the amp off before plugging in the headphones, and turn the amp off when unplugging.

Just wondering what parts might be at fault in order to fix the amp.

Many thanks for any assistance
  Reply With Quote
Old 8th April 2020, 02:02 PM   #2
vkung is offline vkung  Canada
diyAudio Member
 
Join Date: May 2005
Location: Vancouver BC Canada
Do you have another pair of 300B to test?

if you do have another pair of 300B, pls swap the 300B tube set to see whether the problem moved .

Last edited by vkung; 8th April 2020 at 02:51 PM.
  Reply With Quote
Old 8th April 2020, 03:33 PM   #3
paczeltf is offline paczeltf  Hungary
diyAudio Member
 
Join Date: Jan 2018
Location: Budapest
Quote:
Originally Posted by Wansmith View Post
(...) when i unplugged the headphones (with volume turned all the way down), i heard a loud pop/crackle from my speakers (again left channel). I haven't experienced this until today.
Hi, I would first check if there is any DC voltage on the speaker output terminal(s) while the headphones are unplugged.
  Reply With Quote
Old 9th April 2020, 01:05 AM   #4
Wansmith is offline Wansmith  Australia
diyAudio Member
 
Join Date: Feb 2017
Hi all - many thanks for the replies - I swapped the left 300b with the right one (expecting the problem to manifest in the right channel), and the issue now seems to have disappeared. Will monitor throughout the week to see if the issue pops up again.

I couldn't check the DC voltage suggestion as my multimeter is at my parents place, but will pick over the weekend to have with me in case.
  Reply With Quote

Reply


Issue developed in tu8600 re headphone plugging - help plzHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tu8600 - issue soldering heat sink pins Wansmith Elekit 3 12th December 2017 11:56 AM
Zoom H4n headphone out issue PhantomBox Digital Source 2 21st November 2016 05:46 PM
Pioneer SA-9500II developed an issue? kuer Solid State 11 3rd October 2016 07:53 PM
NAD 302 - Headphone jack issue Verve111@gmail. Headphone Systems 0 22nd May 2009 10:33 PM


New To Site? Need Help?

All times are GMT. The time now is 12:05 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki