trinityamps.com

Trinity Amps Guitar Amp Forum
It is currently Sun Jul 21, 2019 5:24 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Tue Apr 09, 2019 11:47 pm 
Offline
Friend
Friend

Joined: Sun Mar 24, 2019 10:35 pm
Posts: 13
Need some help. Finished assembling a new 18 W TMB kit. This is my first kit. It passed the power section voltage checks earlier in the build. However, when I plugged in the rectifier tube and did the next set of voltage checks, I was getting 414 V DC at all of the tube plate pins. I turned it off and removed the rectifier to redo the power section checks to see if something had changed, shorted, etc. I got 6.6 VAC across pins 4 and 5 on rectifier. When I went to check the voltages across pins 1 and 7, the fuse blew. It seemed like my checking it is what made it blow. As soon as I touched the probes to the pins, I heard the cooling fan on my desk, connected to the same outlet, lug down a little and then the fuse blew. I am not sure if the high voltages and the blown fuse are related, or separate problems. Where should I start troubleshooting? Thanks, Trey


Top
 Profile  
 
PostPosted: Wed Apr 10, 2019 12:34 am 
Offline
Friend
Friend

Joined: Sun Mar 24, 2019 10:35 pm
Posts: 13
Already found one significant mistake. On V4 I had connected the orange wire to pin 1 instead of pin 9. I will fix that. And buy another fuse.... Any other ideas? (other than to keep checking and rechecking my work?) -Trey


Top
 Profile  
 
PostPosted: Thu Apr 11, 2019 7:49 am 
Offline
Holy Ghost
Holy Ghost
User avatar

Joined: Sun Mar 13, 2005 4:10 pm
Posts: 7330
Location: Brighton, Canada
Make a photocopy of the layout and highlight the connections and parts while you are checking them.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group