JTM45 ****** OT lead color issues and voltages

Get support and show off your MetroAmp JTM 45 kit builds.

Moderator: VelvetGeorge

Post Reply
MasterEvan07
New Member
Posts: 2
Joined: Wed Jul 02, 2014 7:49 pm
Just the numbers in order: 13492

JTM45 ****** OT lead color issues and voltages

Post by MasterEvan07 » Thu Jul 10, 2014 4:27 pm

I can't seem to get a hold of Chris ****** by phone or email so I figured my best bet was here. Sorry, my pictures were too high resolution to upload here...

I'm using the ****** RS OT with 9K, 8K, 6.6K, and UL taps...

http://i1214.photobucket.com/albums/cc4 ... 1b5fff.jpg
http://i1214.photobucket.com/albums/cc4 ... d80f63.jpg

I'm not getting any readings from the 3, 4, and 6 of the output tubes...so I'm feeling like I got my wires messed up...but then there is no "grey" or "brown" just fleshy and pruney...see -

http://i1214.photobucket.com/albums/cc4 ... i1wvor.jpg

As far as I can tell all my stuff is hooked up properly though I'm getting a weird 169VAC on my rectifier heater wirings, but that makes no sense because it's clearly hooked up to the PT's 5V taps -

http://i1214.photobucket.com/albums/cc4 ... cxtuu8.jpg
http://i1214.photobucket.com/albums/cc4 ... 9k5ya1.jpg

Here are my readings for the V1-3: 1, 3, 6, 8
V1
245, 1.94, 244, 1.95
V2
208.7, 1.2, 363, 209
V3
275, 52, 260, 52

High for the Metro builds docs, but within reason for actual vintage readings...?

MasterEvan07
New Member
Posts: 2
Joined: Wed Jul 02, 2014 7:49 pm
Just the numbers in order: 13492

Re: JTM45 ****** OT lead color issues and voltages

Post by MasterEvan07 » Fri Jul 11, 2014 10:05 pm

So I'm stuck primarily trying to determine why I'm not getting proper B+ to my power tubes at the 3, 4, and 6 pins...they both read ~(-.700)VDC...I am thoroughly confused by that.

Post Reply