Virus b problems - OS won't boot, LCD glitches, LFO led's light up - common problem

[djinfinitee]

Originally Posted by audioman

Problem Solved !!!
After contacting official repair center and ask in vane for the service manual i have changed all the electrolytics (schematics attached) and all the 3 voltage regulator.
all is working perfect now
If you have the same problem do the job and you solved !!
Thank you all
Fabio

Hey Fabio,
I had same exact problem but as OP and after a while of it just sitting it no longer boots at all. Dim screen with no characters and just the LFO 1 and 2 lights come on solid. I opened it up and replaced two 2w 1 ohm 10% tolerance resistor that had some charring on their bodies with a 2w 1 ohm 5% resistor (all I could find) and its still same thing. Dim screen, just thw two LESs. None of my other capacitors or resistors look bad but it sounds like I'd need to replace them as well. Question is, on your diagram, which caps did you replace? All of them or just some? Any clarification is appreciated. So bummed that this thing is bricked after
15 years of just sitting on my desk and working without fail in my studio.

[Rio]

Hey djinfinitee,

Before you continue to change unnecessary things. What you are describing will most likely be on one and the same faulty cap (100uF 25V), as described in more detail here, for example:

http://joeyfehrenbach.tumblr.com/pos...pair-adventure

or the cap(s) mentioned by Timo here:
http://infekted.org/virus/showthread...highlight=boot
(last picture)

So the best thing to do is to replace the left one and see if it works..
(That's just a guess.)

greetings,
rio