Yahoo Groups archive

Emax

Index last updated: 2026-04-28 23:23 UTC

Message

Re: [emax] EMAX II boots but no sound/no VU levels register

2016-03-14 by Ted Summers

IC 10 - you could try UTSOURCE
R84 is 10 ohm.

You verified the voltages from the power supply?  +5VDC on Yellow, +12VDC on Orange, -12VDC on purple?

-T


On Mar 13, 2016, at 6:36 PM, oracular@... [emax] <emax@yahoogroups.com> wrote:


    

I just brought an Emax II rack back to life, sort of. I did the JM215 slim drive mod, and adapted and ATX power supply. It boots up, but so far I haven't gotten a sound out (or in). From the "VU Mode" page, it doesn't register any input even at max gain. If I do "force sampling" with audio going to the sampling input, then audition, I just get silence. Is this a problem with the analog PCB? I'm thinking reseating all ICs, and cleaning the contacts with deoxit.



[Later...]



While reseating IC10 on the analog PCB, I noticed that resistor R84 (the one right next to IC10) is burned. That can't be good.



Does anyone know the specs of R84?  Alternately, a picture of R84 would do, I could work it out.



If my IC10 ADC is toast, is it possible to obtain a replacement?






[Non-text portions of this message have been removed]

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.