HXC Emulator Woes Please help

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Good Afternoon Everyone.

I recently acquired a beautiful Emulator II that was not loading the OS from Disk.

The previous owner purchased a new PSU from Synthchaser as all LED's were lighting up at once but the machine still asks to Insert Diskette.
I got it home and all lights were on as originally described by the owner. Carefully I pushed down on all accessible IC's which seemed to solve that problem, however after a few tries with the original floppy disk I noticed corrosion spores on the disk surface.

Since then I purchased: new Rom/Scan chips and replaced IC 28 chip after reading up on a previous posts relating to the sliders shorting the IC.
I ordered an HXC emulator Rev F and switched it out with the prospective cables and the upper disk drive.

Next I copied the HXC image files to a MSDOS formateed 1gb SD card and renamed the index file as suggested in the accompanying read me text.
and this brings me up to date on my progress but still no luck.

When selecting the EII 3.0 OS on the HXC drive noting happens and and the display on the EII looks a bit garbled.
I have never used either of these machines so am I bit befuddled
Do i need to change anything inside the HXC settings i.e Emu Shugart/HFE?bit rate and gather that the middle red button is enter/yes on the HXC?

Sorry for the diatribe but hoping someone may have some intel for me

Many thanks in advance

[Jeff]

please share a picture of the E II screen.

[fredbet]

Hi Jeff,

Many thanks for your reply I really appreciate it.
I have attached one of the images. I think this may be fixed now due to the correct indexing however I am still unable to load the files from the HXC

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and here is the other one

Do you knwo which IC's are related to the Disk drive operation?

[fredbet]

Any follow up thoughts on this?

Appreciate it

[Jeff]

Any follow up thoughts on this?

Appreciate it

I suspect a general power supply / capacitor issue on this machine.
Do you get similar lcd issue when the hxc is not connected ?

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The whole psu has been replaced by one made by synthchaser.
I don't think the display was like this before the hxc except I was not able to load the os as the original disk was corrupted.

[synthprof]

Hi,

Looks like you have problems with the DRAM in your Emulator. The first bank which is IC13-20 in the main CPU board needs to be working before the EII boots correctly. This is part of the working address space for the OS. If you have something like an RCT or an Inquisitor which can check 4164 DRAM ICs then I would strongly suggest you test them. They are a high failure items and very static sensitive so do take all precautions. Post back on here if you still can't get it working we have had many EII in for service and have seen a lot of it. Some of the other buffering circuits which join the memory data bus back to the CPU might also have failed as well. If you are setting up an EII with an HxC always use the Quick floppy images and also use the memory test disk which is part of the pack. However, be aware these won't work if your DRAM has failed at a low address!

Cheers,
Andy