Peavey Folded Line Reverb Tank

[Mark Black]

Well I didn't know these existed with the Molex pins before.

From a 1986 Peavey KB-100 I'm looking at for a buddy. Mounted vertically, input up along the left sidewall of the speaker enclosure. Looks to be an O.C. Electronics but has no label, only a partially obscured stamped number. Measured DCR 97 ohms input, 374 ohms output.

Sadly, though I have succeeded many times repairing broken coil leads to the Molex pins in other tanks this one was broken too close to the coil and I failed. I ordered up a MOD 8EB2C1B in hopes that will be close enough to work. Too bad - the tank looks to be in pretty good condition mechanically.

[g1]

I've sometimes got lucky undoing the tape and unwinding a couple wraps of wire, then resoldering to the connection. A dental pick helps with the tape & the wire.

[Mark Black]

As it happens I did laboriously/carefully unwrap the tape, only to find it was the start (inner) lead. Bummer.

Thanks for that suggestion though!

[drewl]

Yeah, sometimes you can get to the broken coil wire, sometimes you can't.

I use my microscope at work for these, helps see alot better.

[TomCarlos]

Great timing for this post Mark!

I am currently working on a Peavey KB300. This amp uses an Accutronics 8EB2C1B tank, located just below where the chassis is mounted. I wouldn't have expected to see two wires broken off in the tank. Using Greg's suggestions, I was able to use an Exacto knife and get to the wires on the coil. I did some soldering (under a big magnifying glass) and shored things up with some heat shrink tubing. Voila... this tank will live to see another day.

[Mick Bailey]

Rewinding coils is pretty easy and I usually save up a stack of broken reverb tanks to fix in one session. Drill out the rivets, remove the coils, rewind and reassemble. I replace the rivet with a small screw, nut and washer (10BA here in the UK). The coils are pretty tolerant of windings and I just fill the bobbins to roughly where they were by marking the bobbin before removing the old winding.