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

Pioneer car amplifiers stuck on mute
Pioneer car amplifiers stuck on mute
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 July 2019, 02:41 PM   #1
seditiouss is offline seditiouss
diyAudio Member
 
Join Date: Jul 2019
Default Pioneer car amplifiers stuck on mute

I have two Pioneer car amplifiers Pioneer GM-62 & Pioneer GM 3400 , both with same problem : working only with some batteries / power supplies , by example on my working bench where I have a combined (power supply + 12 V car battery as buffer) supply unit with long enough cable extensions till my connection (so, some drop of power - unstabilised) , ARE WORKING !!! , when connected direct to a battery or short-connected (short cables) direct to a computer 12V power supply or laptop power supply or any other 12V / 14 V / 16V power supply - ARE NOT WORKING. On Pioneer GM-62 've found TA 8194Z-muting circuit and I will work on it but on Pioneer GM 3400 I did not see the muting / stby circuit. Any help ?
  Reply With Quote
Old 12th July 2019, 02:46 PM   #2
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Are you using a signal source with a grounded shield?
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 12th July 2019, 03:06 PM   #3
seditiouss is offline seditiouss
diyAudio Member
 
Join Date: Jul 2019
Yes , shielded RCA, of course.The idea is that these Pioneer amplifiers are battery-voltage (or ampers)-sensitive, triggered by some fluctuation of voltage / ampers. Somehow need a "drop of voltage" to mute off. Direct to a battery there is no drop of voltage.
  Reply With Quote
Old 12th July 2019, 03:11 PM   #4
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
What'e the resistance from the signal source shield to the ground terminal of the amplifier?
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 14th July 2019, 06:12 PM   #5
seditiouss is offline seditiouss
diyAudio Member
 
Join Date: Jul 2019
Brilliant answer ! That was the problem ! I've spent almost 4 hours understanding what happened, why working on my bench (on my bench all are common-grounded) but not on any car battery. Pioneer car amplifiers need at least a strap - if not a correct line-up - between input ground and power ground.
  Reply With Quote

Reply


Pioneer car amplifiers stuck on muteHide 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
Yamaha amplifier stuck on mute. redrooster Solid State 0 6th June 2018 03:31 AM
technics su-g 91 mute - how to un-mute srinath Solid State 0 1st March 2015 09:59 PM
Pioneer DEH-P980BT - Faceplate stuck down PedroDaGr8 Car Audio 2 12th July 2011 03:57 AM
Pioneer SX-6 Mute Problem antiquekid3 Solid State 0 13th March 2010 10:45 PM
please help - no mute but did mute mod - tda1541 loomis Digital Source 1 14th November 2002 10:54 AM


New To Site? Need Help?

All times are GMT. The time now is 01:36 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki