trio amp up in smoke-ya really up - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 16th June 2004, 05:55 AM   #1
karma is offline karma  Canada
diyAudio Member
 
karma's Avatar
 
Join Date: Feb 2003
Location: hamilton,ontario
Arrow trio amp up in smoke-ya really up

man it stinks when a old amp finally goes. good thing i have the camera next to me so i can take a shot. smoke sparks speakers are ok. but i think its time to retool.

i turned it off right after the fast shots. it fixable
Attached Images
File Type: jpg mvc-641f.jpg (72.9 KB, 436 views)
  Reply With Quote
Old 16th June 2004, 05:57 AM   #2
karma is offline karma  Canada
diyAudio Member
 
karma's Avatar
 
Join Date: Feb 2003
Location: hamilton,ontario
Default .

i took em so fast the last one had smoke but its out of focus o well
Attached Images
File Type: jpg mvc-643f.jpg (38.5 KB, 353 views)
  Reply With Quote
Old 16th June 2004, 06:10 AM   #3
karma is offline karma  Canada
diyAudio Member
 
karma's Avatar
 
Join Date: Feb 2003
Location: hamilton,ontario
total damage

2 12ax70 toast
4 7189a toast
  Reply With Quote
Old 16th June 2004, 06:16 AM   #4
diyAudio Member
 
Join Date: Feb 2002
Location: Western Sydney
Default Love that purple glow...

only managed to acheive it once many moons ago when I was kid,
when I didn't realise the TX I was using had a 110 v primary instead of 240v, the 80 rectifier valve had a permanent purple haze after that...at least I lived to tell the tale...
Pete McK
  Reply With Quote
Old 16th June 2004, 06:24 AM   #5
karma is offline karma  Canada
diyAudio Member
 
karma's Avatar
 
Join Date: Feb 2003
Location: hamilton,ontario
i should have replaced the tubes when replaced the sockets
there super old original the geter was dark brown on some
i live close to the tube store so it will be a easy fix. from what i can see it was only one resister that is bad. we shall see
  Reply With Quote
Old 16th June 2004, 11:40 AM   #6
ALBQ is offline ALBQ  United States
diyAudio Member
 
Join Date: Dec 2003
Location: Albuquerque
Default TRIO - Smoked Output

Karma,
I have a Kenwood KW-70 (Trio = Kenwood) receiver that almost suffered the same fate. Question, have you replaced any of the coupling caps tot he 7189s? When I first fired up my receiver, the plates of the 7189s would glow red hot in a matter of a couple minutes. Was caused by leaking coupling caps - bias voltage would drop to ~10V-12V. If this is the cause, is an easy fix
-ALBQ
Attached Images
File Type: jpg kenwood-playinghappily.jpg (55.4 KB, 221 views)
  Reply With Quote
Old 16th June 2004, 04:32 PM   #7
diyAudio Member
 
Sch3mat1c's Avatar
 
Join Date: Jan 2003
Location: Milwaukee, WI
Send a message via ICQ to Sch3mat1c Send a message via AIM to Sch3mat1c
Yeouch! Had that happen to a 6L6GC (brand new Valve Art) once, it was within ratings... the oddest part was it still works to this day! Must've been a loose bit of screen wire that vaporized itself into working again...

Tim
__________________
Seven Transistor Labs
Projects and Resources
  Reply With Quote
Old 16th June 2004, 07:52 PM   #8
karma is offline karma  Canada
diyAudio Member
 
karma's Avatar
 
Join Date: Feb 2003
Location: hamilton,ontario
its weird how it all started. can u kill a tube by moving the amp when its powered up? the amp was on a speaker wire so i dragged
it over thats when the tube started shooting sparks in the filament.

anyway im looking at replacing em with this type

http://store.yahoo.com/thetubestore/russianel84m.html

heres a pic of the guts integrated->
Attached Images
File Type: jpg mvc-646f.jpg (86.3 KB, 212 views)
  Reply With Quote
Old 16th June 2004, 08:19 PM   #9
diyAudio Member
 
Frank Berry's Avatar
 
Join Date: Sep 2003
Location: Midland, Michigan
I looked at the first photo and saw a milky white color on the top of the tube that is glowing. That color indicates that the tube has lost it's vacuum seal.

Before your install new output tubes, make sure to check the d.c. bias supply (if the amplifier has fixed bias) and replace all coupling capacitors that have a d.c. potential across them.
__________________
Frank
  Reply With Quote
Old 17th June 2004, 12:25 AM   #10
karma is offline karma  Canada
diyAudio Member
 
karma's Avatar
 
Join Date: Feb 2003
Location: hamilton,ontario
sure i will. the white is brown my camera is old. i allso found a

lot of bad wires that where coming apart and touching the case. it needs a lot of work

i started with the sockets just got to open the holes abit.
and ordered the tubes today
Attached Images
File Type: jpg mvc-650f.jpg (63.8 KB, 204 views)
  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
trio W-38 problems damianl Tubes / Valves 11 11th December 2010 09:59 PM
Micromega Trio Highspeed Digital Source 3 6th June 2009 12:48 AM
Trio TA-80W radioeng Chip Amps 2 3rd May 2009 11:11 PM
Trio W-45a Amp- namatjira Tubes / Valves 1 12th April 2008 04:14 AM
trio amp latala Solid State 1 24th February 2006 08:09 PM


New To Site? Need Help?

All times are GMT. The time now is 02:22 PM.


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