Vintage Synth Repair

In addition to attenuating the output of the piano, you may need to 
do the gain mod on the Rocky Road.  They're notorious for having too 
much gain even for guitars.  I've performed this gain mod on a Rocky 
Road, and it helped a lot, although it's still a fairly poor Leslie 
sim, it's a pretty decent chorus box.  Here's a summary of the mod 
from a review by "dale" at Harmony Central, URL 
http://www.harmony-
central.com/Effects/Data/Danelectro/DJ_20_Rocky_Road_Spinning_Speaker-
01.html :

Overall i think it's a great pedal except for the boost problem. So 
i'll try to explain how to fiz that. In units like this they use 
micro resistors that are little rectangular jobs that are about 1/16" 
long and 1/2 as wide. This makes it reall hard to work on. A loop or 
magnifying glass is almost absolutly necassary unless your eyesight 
is incredible. [maybe mine is just really bad at 40 something *S*]

Basically, what you have to do is jump a resistor. thats means you 
have to solder a wire from one end of the resisitor to the other so 
the signal passes thru unrestricted. There are 2 main circuit boards 
and a little one for the switches. The one you need to get to is the 
one on which the speed and drive pots are located on. Take off the 
board on top first by removing the 2 screws so you can get to the 
target board. Remove the connector between the 2 boards. Then remove 
the knobs and screws from the target board and lift it out. It'll 
still be connected to the switch boaed by a ribbon cable that u cant 
remove, but it has enough length to work with it. Directly in bach of 
the drive pot you'll see 2 resistors. Thone closest to the pot is the 
target. one end of it is up close to the L.E.D.'s. A small soldering 
iron tip is necassary to do this. Solder a piece of very thin wire 
from one end of the resistor to the other. Thats all there is to it. 
However, as i said it's VERY VERY small, and it may be intimidating 
to some. 

===

A WORD OF WARNING: When taking the pedal apart, extreme caution is 
needed when removing the knobs from the two control pots (necessary 
before the main pcb can be removed). I thought I was being careful - 
an even, gentle tugging with a suitable pair of pliers - yet I 
managed to snap the shaft on the "gain" pot. It was lucky it was 
the "gain" pot (ie the one I'm not likely to want to tweak - it can 
still be moved with a small screwdriver, like a preset pot) and not 
the "speed" one! This aside, the mod was relatively easy to do - 
though I did double-check I had found the right resistor, by bridging 
it with an opened-out paperclip while running a signal through the 
guts of the pedal, before committing myself to solder!


--- In vintagesynthrepair@y..., mtcasino@c... wrote:
> Stephen:
> 
> You are correct, too much signal into the input.
> Try something like this:
> http://www.dairiki.org/HammondWiki/index.php?
LineOutFromAHammondConsole
> 
> Mike
> Mt. Holly NJ
>   ----- Original Message ----- 
>   From: Kenety, Steve 
>   To: 'vintagesynthrepair@y...' 
>   Sent: Thursday, May 23, 2002 9:00 AM
>   Subject: [vintagesynthrepair] Wurlie
> 
> 
>   Folks:
> 
>   I just picked up the new Danelectro "Rocky Road" pedal, which is 
a sort of
>   ersatz Lelie simulator, much like the old Rotoverb.  It works 
fine with a
>   guitar, but when I try to run my Wurlitzer 200A through it (or my 
Roland
>   E-7), all it does is screech.  I suspect that it's overdriving 
somehow to
>   the max.  Anybody have any experience with this?
> 
>   Thx--
> 
>   SAK
> 
>   S T E P H E N   A.   K E N E T Y
>   Vice President, Management Supervisor
>   DVC Communications
>   44 Whippany Road
>   Morristown, NJ 07960
>   ph: (973) 775-6352/fax: (973) 775-6732
>   skenety@d...
>   http://www.dvc.com
> 
> 
> 
> 
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