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

The diyAudio Store A forum for discussing anything about the products available in The diyAudio Store.

TU-8500 Preamp kit built, but no power
TU-8500 Preamp kit built, but no power
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 8th August 2019, 08:01 PM   #1
790rivers is offline 790rivers  United States
diyAudio Member
 
Join Date: Apr 2019
Location: NYC
Default TU-8500 Preamp kit built, but no power

I just finished building the kit and it is not powering up. Anyone else have similar birthing issues? I have AC through the front toggle power switch, and continuity on the first two-wire harness. But no LED light, no tube glow. I'm not sure how to trouble shoot beyond basic continuity of the harnesses. If I have to send it out, where does it go? And if it turns out to be a bad transformer, will DIYAudio or Elekit cover it? Many thanks for collective wisdom.
  Reply With Quote
Old 8th August 2019, 10:13 PM   #2
stank0 is offline stank0  United States
diyAudio Member
 
Join Date: Jan 2010
Location: near Baltimore MD
Default No power TU-8500

I built mine in January. It worked fine right off the bat. When I turn on the power switch the blue light does not come on right away. After about 3-5 seconds there is a click and the blue light comes on. There is some sort of time delay to let the tube heaters get up to temp, before the rest of the amp is powered up. Which means the power switch on the front panel is merely starting the start up process and an internal relay is really turning on the full power.
Iím not at home right now. I could have a look through the build instructions to jog my memory some more. -alex
  Reply With Quote
Old 9th August 2019, 02:55 AM   #3
WKCox is offline WKCox  United States
diyAudio Member
 
WKCox's Avatar
 
Join Date: Mar 2004
Location: Wisconsin
TU-8500 Preamp kit built, but no power
Quote:
Originally Posted by 790rivers View Post
I just finished building the kit and it is not powering up. Anyone else have similar birthing issues? I have AC through the front toggle power switch, and continuity on the first two-wire harness. But no LED light, no tube glow. I'm not sure how to trouble shoot beyond basic continuity of the harnesses. If I have to send it out, where does it go? And if it turns out to be a bad transformer, will DIYAudio or Elekit cover it? Many thanks for collective wisdom.
Suggest posting in the Elekit forum. You're likely to get a faster response from Elekit users.
__________________
Pass F5, M2x, ACA, B1, B1 Korg; Audio Research ST-70-C3; Dynaco ST-35; Audio Electronic Supply SE-1; Elekit TU-8500; Hagerman Bugle; Scan-Speak Solist MTM; Selah SA-1; Seas Loki; Cavalli eXStatA; Millett Hybrid MAX, Hybrid MiniMAX
  Reply With Quote
Old 9th August 2019, 07:29 AM   #4
Jason is offline Jason  Australia
:)
diyAudio Administrator
 
Jason's Avatar
 
Join Date: Oct 2000
Location: Melbourne
TU-8500 Preamp kit built, but no power
790rivers - Victor Kung will be in touch with you directly.
  Reply With Quote

Reply


TU-8500 Preamp kit built, but no powerHide 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
Elekit TU-8500 Preamp Kit Build - My First Build mikejr83 Elekit 19 19th September 2019 02:15 PM
Questions about TU-8500 Preamp HarryY Elekit 4 29th October 2017 03:58 AM
Juma's Preamp for F5 -new built- GentryBa Pass Labs 33 16th October 2015 01:46 PM
Refurbished ATI 8500 Preamp/Processor for Sale! Tenacious Swap Meet 0 18th June 2010 12:12 AM
i want to built new preamp maxpou Solid State 8 1st January 2008 08:11 AM


New To Site? Need Help?

All times are GMT. The time now is 06:13 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