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Title: E-mu 3 Trouble, Frozen Post by: Smitkis on February 07, 2023, 11:23:10 AM Hoping this is an active group. I just picked up an Emulator III and it is frozen on power up. Screen is just blocks, A few lights are on but no changes with any button presses. The hard drive comes on after maybe a minute or two (strange), and the disk drive down not seem to want to power up. I'm also a little concerned why the previous owner has the "A,B,C,D" cables jumbled. Seems like intuitively they should go in order. Has anyone been through a blocked out screen issue? I'll attach a few pictures as well.
Title: Re: E-mu 3 Trouble, Frozen Post by: Smitkis on February 07, 2023, 11:27:37 AM Maybe someone can spot an issue..
Title: Re: E-mu 3 Trouble, Frozen Post by: Deft on February 08, 2023, 01:13:22 AM check the voltage on PSU rail first.
Title: Re: E-mu 3 Trouble, Frozen Post by: Smitkis on February 08, 2023, 07:32:30 PM Power supply looks good.
Red: +15.3 Black: -15.4 Yellow: 5 Orange: 12.2 Title: Re: E-mu 3 Trouble, Frozen Post by: Deft on February 09, 2023, 05:50:27 AM yes, PSU looks ok.
second - check and clean all the cable connections, disconnect all cables, clean contacts and the put them back. third - carefully pull out memory and cpu boards, inspect them for "burns" microcracks etc, clean contacts and pull them back. Title: Re: E-mu 3 Trouble, Frozen Post by: Deft on February 09, 2023, 05:59:50 AM Maybe someone can spot an issue.. also, just noticed - voice outputs wiring is incorrect, see the correct picture: this won`t affect the boot sequence, but please also send a picture of boards wirinng Title: Re: E-mu 3 Trouble, Frozen Post by: Smitkis on February 09, 2023, 10:22:50 AM Yes, I noticed that too. The engineer in me was wanting to swap those to "ABCD", but didn't get to it yet since it I figured they had no issue with boot up. I'll get some pictures of where they tie in to the main boards.
Title: Re: E-mu 3 Trouble, Frozen Post by: Deft on February 10, 2023, 01:22:12 AM My intuition tells me - try to check this cable connection first:
Title: Re: E-mu 3 Trouble, Frozen Post by: Smitkis on February 10, 2023, 10:06:27 AM I didn't get to it last night, but I may slide that board and and clean up both cable ends as well.
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