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

Introductions Welcome to the DIYaudio Community. Introduce yourself here so we can get to know you better!

hello and help!!!
hello and help!!!
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 6th June 2010, 02:56 AM   #1
jayb77 is offline jayb77  United States
diyAudio Member
Join Date: Jun 2010
Unhappy hello and help!!!

I am an audiophile as probably most of you are and I have a very taxing issue with my favorite preamp ever. It is one of the very first Diva Audio m-7 preamp made by T.S.Lim it has 3 12-AX7 tubes in the pre section and a seperate tube rectified power supply that is versatile as the tube you can use from a GZ-30 to a 5U4G but i need schematics because it has stopped working and I cant find them anywhere.Please help if you can.It does the following when i turn on the power supply everything is fine but as soon as I plug the umbilical wire to the pre section the tube turns red hot in seconds and nothing comes out as far as sound but i just dont know what to do so any help is very appreciated.Have and will send internal pics if you ask and or need them. Thank you all very very much
  Reply With Quote
Old 6th June 2010, 04:38 AM   #2
cowboy99 is offline cowboy99  United States
diyAudio Member
cowboy99's Avatar
Join Date: Dec 2008
Location: SSW of Austin TX
hello and help!!!
There is quite a wealth to tube knowledge and expertise here.....not to mention some very strong opinions. I'm impressed with their knowledge level. Suggest you post your query in the Tubes and Valves section.
But, sure sounds like you've got a shorted 'can-type' or 'multi-sectional filter cap' shorting to ground or to itself......that 'red-heater' is excess (or rampant) current and upon hook-up (which s/b done 'power-off) does make sense.
Best way to get a 'tubee' response is to state an opinion........No offense,guys.
I'm kinda curious about that myself........
  Reply With Quote
Old 6th June 2010, 01:08 PM   #3
Cal Weldon is offline Cal Weldon  Canada
diyAudio Moderator
Cal Weldon's Avatar
Join Date: Jan 2004
Location: Near Vancouver
hello and help!!!
Hello and welcome to the forums
planet10 needs your help:
Let's help Ruth and Dave
  Reply With Quote


hello and help!!!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

Forum Jump

New To Site? Need Help?

All times are GMT. The time now is 09:04 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio