Conference napalm::guitar

        I'm not a wiz on spring reverbs, but: I don't think 2K on the 
    output winding is too cool (it might be your problem!). There is 
    no electrical connection from the input to the output on the reverb
    tank. The transducers on each end of the spring should be isolated. 
    
    
    							-B()()M-

    
    	
    When I lost the reverb on my KH (also spring), it turned out to be the
    1458-type op-amp chip.

    Ray,
    
       You should not read anything from the input of the reverb to the
    output of the reverb. spring reverbs are set up like two phono pickups
    with a spring in the middle - there is a send transformer at one end,
    and a receive transformer at ther other. The springs are isolated from
    both ends.
      When you ohm out each coil, they may or may not be the same impedance.
    The 2-K value might be good since it's probably a hi-impedance circuit.
    I'm "guessing" that you should not read any thing lower than 150 ohms,
    and no higher than 50-k.
    
    /J

    
 
    
    	Yah...I ohmed out the transformers internel to the reverb...one
    	seemed ok but the other seemed to be open....I think I might 
    	try it again with a better meter though..the one I was using 
    	was one of those 19.95 Rat Shack specials..the bat. is
    	probably half dead too...I'll check it out again tonight....
    	....hopefully my fender mender will be in tonight so can
    	screw around with that too....

    
    	I'll enter this info in case anyone decides to get their hands
    	into the reverb section of a super (probably applies to most other
    	fender amps)...this info came from the service dept at fender...
    
    	DC resistancd of transformer(TR4) in reverb driver circuit:
    	input winding(red+blue) = 2k-ohms
    	output winding(grn+blk) = low ohms (1-2 ohms)
    	
    	DC resistance of transducers inside reverb tank:
    	inout = low ohms
    	output = 160 ohms
     
    	the coils internal to the tank are isolated from the transducers....
    	you will not read any resistance from inout to output jacks
    	on the tank....
    	
    
        anyone got an old reverb tank hanging around collecting dust ????
    	
    
    Ray

    
Ray,

	I have had some problems with spring reverbs in the past.

The sort Fender use are made by Accutronics in the US.

I have had the coils blow on them (to be precise, the coil connections as 
they emerged from the winding got fatigued due to vibration over time and 
broke).

I managed to "gently" solder it back. Also the springs sometimes broke and I 
again, re-soldered them back to working order.

IF I got real desperate, I guess I would try and re-wind the sucker, although
I have yet to try......

The accutronics units are available here in the UK at about 30 pounds sterling
....(about 50 dollars?), so you could look on the unit for their address, 
find a local supplier ( your music shop?), and order one.

BTW, I am guessing here, but if you have a real sensitive (1 millivolt range
meter), you could GENTLY "scratch" the spring with the meter hung across the
output coil. You should get a reading on ac volts. This would only test the 
output transducer.

If you want to get real clever.....Your input transducer has an impedance
of 2K ohms, so hang a small torch battery (about 1 1/2 volts) across it for
a fraction of a second (perhaps put a 1K ohm resistor in series to limit
the transient current to about 1/2 mA). Put your ear to the reverb spring
and you should hear a "reverby" click. These two tests have confirmed the
reverb is functioning and the problem may be in the connectors or drive/amp
circuitry.

Good luck,

Dave "analog" Litten
 

    	Ray, the Cambridge Music Center in Porter Sq., Cambridge
    	has new Fender reverb tanks for ~$30.

    			Cambridge Music Center
    			1904 Mass Ave.
    			Cambridge, MA
    			(617) 491-5433 ask for Hal
    
    	Neal
    

	Aren't they also known as Morley?

    
    
    	have you ohmed out the  cables???

    
    
    	Yah..cables look fine....the problem appears to be one of the
    	transducers internal to the tank...one reads open....
    
    	now if I could only find where that little wire is broken....
    
    

    Ray,
    
       If you haven't already, remove the reverb from the amp. Check
    the solder job on the RCA jack. If you've already had it out, just
    rewind the coil... *8^)) (Just kidding!).
    
    /J

    For the life of me I don't know why anyone would want to mess around
    with a spring reverb....especially after experiencing a good digital
    reverb. There is no comparison. I've got a peavey reverb pedal and it
    has to be the best reverb effect I've ever heard for the price.........
    (and it is stereo and totally quiet. plus it has 16 different select-
    ions to chose from ranging from a lush hall to reverse gating).........
    Simply amazing!!!

    I've got a bit of a problem with the reverb on a 66 Princeton reverb.
    Typically, when I turn the amp on, the reverb doesn't work at all. 
    However, if I turn the volume up, and strum a big loud chord, it seems
    to "wake it up", and then it subsequently works fine, for as long as
    I use it.
    
    Does anyone have any ideas on what is happening here, and how I might
    permanently fix this annoying (but not life threatening) problem??
    
    thanks,
    
    jim

     Jim,

     It's most likely V2. (12AT7 reverb driver tube). I'd recommend
     swapping it out with a known good tube. If not ok, swap out V3
     (12AX7 reverb recovery and 3rd gain stage tube). If still not ok,
     it's probably the reverb tank. They're ~$30.

     Neal