Rotoverb - P-100

analogguru · Post by **analogguru** » 08 Oct 2008, 19:45

Hey cool, analogmike is pushing FSB.org:
https://www.diystompboxes.com/smfforum/ ... ic=71316.0

analogmike wrote:HI,

I have one of these that does not work. All the chips (14 pins) on the board are sanded off, they must have known about the FSB forum even 30 years ago.

No they must have known about the "King of solder-jockeys" before, because here at FSB-forum sanded chips are not really causing a big problem..... We even have op-amp testers, digital chip testers etc. and a lot of brain power since decades in our "arsenal".

analogmike wrote:it was made in CA, not the smaller Guild rotoverb (though may be similar inside?)
it looks like a 4 switch Leslie control pedal.

Does anyone have the schematic or more info on this old beast?

Funny, he took the picture from this auction:
https://cgi.ebay.com/ws/eBayISAPI.dll?V ... 0274548364
I hope, "musicianfind" will not sue him for copyright violation (of the scan).

analogmike wrote:I thought it would be easy, as it looked like the SAD1024 evaluation circuit.. but there are no 16 pin chips, so no SAD1024. There are three 14 pin chips, I dont think there were any other BBD chips available back in 1975.

What BS..... The TDA1022 was widely available and already used in the Solina Strings.... Ok, it´s not 14pin.
And then there was also the TCA350Y available .....

But who says that it must be a BBD ?
Why analogmike is believing all the sales-BS-talk what he reads in an advert from more than 30 years ago? Does he think, that the companies of this time acted different than the boutique scene of today ?

analogguru

unbeliever · Post by **unbeliever** » 08 Oct 2008, 21:28

I guess Mike has a vested business that FSB appears to threaten; doubt that he has lost any sales because of info on the KOT etc being up here, though. I must say, he's been a pretty cool guy to deal with (as I have done in the past for biz purposes), and out of all the pedal makers he'd be vying for number 1 in my book.

I'd be inclined to kid him about getting 'free' assistance from the diystompbox crowd for what appears to be a commercial job (as he talks about the reverse-engineering not being cost effective).

Fuzzer · Post by **Fuzzer** » 08 Oct 2008, 21:29

Poor Mike, so childish of him, and so absurd.

analogguru · Post by **analogguru** » 08 Oct 2008, 21:32

Ok, here is the challenge for all FSB-members:
the track-side:
http://www.analogman.com/pics/rotoverbtraces.jpg
and the component side:
http://www.analogman.com/pics/rotoverbcomponents.jpg

analogguru

Fuzzer · Post by **Fuzzer** » 08 Oct 2008, 21:34

I guess Mike has a vested business that FSB appears to threaten

This has been proved wrong already, Marshall amplification is more a threat to his business, than FSB or any solder jockey (other than him).

I respect the guy for his work, but this attittude is ridiculous, it's like a saying I know, which in english would be something like, 'besides thief, buffoon'.

analogguru · Post by **analogguru** » 08 Oct 2008, 23:18

Naturally there must be a small difference between a king (of solder-jockeys) and a guru. Under this painful pressure I am enforced to release some hints:

enjoy,
analogguru

unbeliever · Post by **unbeliever** » 09 Oct 2008, 00:28

Fuzzer wrote:
I guess Mike has a vested business that FSB appears to threaten
This has been proved wrong already, Marshall amplification is more a threat to his business, than FSB or any solder jockey (other than him).

That's why I said 'appears'.

He's been in business a long time, and despite other people jumping on his bandwagon and fluking success (RK) I think he'll be around for a while yet ... FSB, or no FSB.

edit - great stuff 'guru

Fuzzer · Post by **Fuzzer** » 09 Oct 2008, 02:43

Naturally there must be a small difference between a king (of solder-jockeys) and a guru

For sure man, for sure; have my respects.

analogguru · Post by **analogguru** » 09 Oct 2008, 19:43

Now I am really sad:
one hour ago analogmike saw my work at the other forum, and not a simple word like "thank you"

I think mickey doesn´t like me ..... why ?
I mean, at least he could have posted the wiring around, so that I could start my own clown-.... sorry, clone-business...

analogguru

msmith40 · Post by **msmith40** » 16 Nov 2008, 18:30

So.....where would one go to get this device repaired/serviced?
Any schematics available?

Thanks!

analogguru · Post by **analogguru** » 16 Nov 2008, 18:54

msmith40 wrote:So.....where would one go to get this device repaired/serviced?

I don´t know .... in the US / New York area - (I am myself located in europe).
Maybe "soulsonic" can help you, he is located in the US.

Any schematics available?

Thanks!

I have already traced the pcb itself, only the surrounding wiring is missing.
When you have a broken unit, with some pictures of the wiring (switches, potentiometers, jacks) the schematic can be finished.

analogguru

IggY · Post by **IggY** » 12 Dec 2008, 08:12

until now there was some information about the mistery chip missing here:
https://www.diystompboxes.com/smfforum/ ... #msg583816

~arph · Post by **~arph** » 12 Dec 2008, 09:41

Looks like:

ICL8038

Which is a voltage controlled waveform generator

http://www.intersil.com/data/FN/FN2864.pdf

EDIT: which was in the post at diys.

Blitz Krieg · Post by **Blitz Krieg** » 26 Feb 2015, 11:29

any other fx use this chip?