Peavey Tour 700

[Sloan]

Hey,
Wondering if anyone has a schematic for the Peavey Tour 700 they would be willing to share. Thanks. in advance.

[pecorporation]

tour700.pdf

[Sloan]

Many, many thanks!

Have you had the chance to get inside one of these yet? I'm having a mains fuse issue, haven't tracked it down yet.

Also, do you by chance go to Hamvention in Dayton, OH?
I was there last year, def not my scene (the radio stuff) but sold a ton of junk off. Planning to make it back this year too.

[pecorporation]

YW

By mains fuse issues, do you mean the fuse blows everytime at power up?

Steve

[pecorporation]

BTW, never been to Hamvention and also haven't been in one those Tour 700's.

It's backward's day for me.

Steve

[Sloan]

YW

By mains fuse issues, do you mean the fuse blows everytime at power up?

Steve

yeah, that's it.

couldn't find anything immediately noticable, so i'm thinking about pulling the outputs and seeing if that changes anything. unfortunately my solder sucker just broke so i've gotta get that sorted.

it calls for a fast acting fuse and the original was a ceramic, but usually i find slo blow types as main fuses.

[pecorporation]

Try isolating the power transformer secondary leads, see if it's a low voltage supply issue or high voltage supply issue or sometimes, the power transformer can short causing fuses to blow.

[Sloan]

i checked between the primary and secondary leads and didn't find any continuity, so that's good i guess. i haven't really had to do any work with transformers yet, so i'm kinda flying blind here. solid state gear isn't really my favorite to work on, but i like learning!

[pecorporation]

Does the fuse blow immediately when it is powered on?

[Sloan]

Does the fuse blow immediately when it is powered on?

yeah, you can hear the relay(s) switch and bam, it's fried.

[pecorporation]

Did you find any shorts on U11 & U12 bridge rectifiers?

[Sloan]

Did you find any shorts on U11 & U12 bridge rectifiers?

i haven't checked the rectifiers yet. do they check like transistors?

i was under the impression that the output transistors would be the most likely culprit. also, the two internal fuses are fine.

[pecorporation]

Checking rectifiers involves looking for shorts or continuity between any 2 legs.

The internal fuses are for the low voltage supply which is fine.

Output tranis are the most likely culprits in this amp and can be checked as well for shorts.

[Sloan]

i'll do some digging around and see. i don't have the internet at home, so i've just been bumming wifi in town or using my friends connection which makes things much more difficult!

thanks a ton for all your help so far.

[Sloan]

Fixed some guys JCM800 and was able to afford a desoldering iron for this job. Tested the rectifiers and all output transistors, found a bad transistor (q10). Unfortunately the guy can't afford what I'm charging to fix it!

Thanks a ton for the help, I really do appreciate it.