madbeanpedals::forum

General => Open Discussion => Topic started by: redkurn on April 04, 2023, 01:13:08 AM

Title: 80’s computer tester
Post by: redkurn on April 04, 2023, 01:13:08 AM
Found one on the side of the road, spent a hour breaking it down and stripped ribbon cable, wiring that is appropriate pedal building size.

If I post pics of the boards can anyone help identify useful parts?
I see some that looks very useful, transistor, caps and diodes, but there are old IC chips to attempt to salvage if useful for a pedal. 😃
Title: Re: 80’s computer tester
Post by: redkurn on April 07, 2023, 04:20:08 PM
No one can help?
Title: Re: 80’s computer tester
Post by: Bio77 on April 07, 2023, 04:24:23 PM
Let's see them pics  8)
Title: Re: 80’s computer tester
Post by: benny_profane on April 07, 2023, 08:12:56 PM
Any of the mcu chips are probably not useful in pedal circuits. Although there might be op-amps and CMOS logic in there that could be.
Title: Re: 80’s computer tester
Post by: selfdestroyer on April 07, 2023, 08:41:57 PM
I was a huge fan of reusing old electronics back in the day. Just make sure you have a good DMM to test stuff before using it.
Title: Re: 80’s computer tester
Post by: redkurn on April 10, 2023, 11:48:31 PM
Sorry guys, been raining here a lot and the cortisone shot in my back has been wearing off. Lucky me 😂

Optimistically I'd like to build one of the fuzz pedals I've been looking at the 4-track fuzz from fuzz dog or even the fuzz from guitar.com article build your own fuzz pedal.

I doubt I've got the parts for it to be Ge, but something to experiment with, maybe a jen fuzz or something entirely different I hadn't thought of like a amp. 🤷‍♂️

Anyhow I've also got a line 6 vetta amp head that I've been salvaging bits from time to time from for 1/4 jacks or knobs etc. post pics of that shortly to the same folder.

https://www.dropbox.com/sh/w4wxffvlnxup6os/AAApEUr7N1Q9LHaccHtD656Oa?dl=0
Title: Re: 80’s computer tester
Post by: Fatknuckle on April 11, 2023, 01:53:51 PM
The caps (radial and axial), a diode or two, maybe voltage regulators, and any heat heatsinks.  May have to research the ICs to see if they are useful.
Title: Re: 80’s computer tester
Post by: redkurn on April 11, 2023, 07:18:13 PM
Hope the transistors in there can be used. Maybe experiment with some and see what happens.
Title: Re: 80’s computer tester
Post by: jessenator on April 11, 2023, 07:30:56 PM
I can't look up the p/n right now to check, but the flyback transformer in this pic (couldn't get it to load on mobile for some reason) might be if use to some vintage Mac enthusiasts. The transformers on old monochrome Macs' analogue boards are wearing out and replacements are thin on the ground.

Title: Re: 80’s computer tester
Post by: redkurn on April 13, 2023, 04:42:21 AM
Don't know if it even works.

Found it on the side of the road and stripped it for parts, probably have to test everything. 😂