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Here is the latest update on the Audio channels fiasco. I have a slim stack, plays audio on 4/3 in test tape, silent on 1/2 I tracked down a second set of boards, same exact results. I moved boards back one slot in cage, same exact results. I helped another member get his slim stack running, he...

Sounds like I am ordrering a new fan for mine now. I just took it out to look at how pretty it was yesterday, and fan sounded like shit. Thanks @AlxUnderBase

I just replaced my z80 to get the board to boot, no sound. Pressed on 315-5385 and sounds are back! Time for a reflow. Thanks!

Sorry. Problem did not move to different channels. Stayed the same.

Picked up another bio8 slim. Slapped it in with a couple shitty caps, got it to boot. EXACTLY THE SAME PROBLEM. Missing 2 channels on test tape, audio test. only things left imo are ribbon cable between boards or the mobo/interconnect board. I shifted all boards up one slot (cage has 4...

Removed gs option. If I need to offer gs I can put it back in. On other forums I am used to selling on you can't list with FF only, cant find any rules here that state the same. If there are, no problem, I can add it back again.

Cleaned, tested on my 16b. Suped up custom labels to make it look cool AF. This will run with standard Z80 and 68000 on 16B PCB. **If your main PCB has an epoxy block at position D15, remove and replace with a standard Z80, audio will not work if you don't. If you are still running encrypted...

Cleaned, tested on my 16b. Replaced all 4 caps in corners. Suped up custom labels to make it look cool AF. This will run with standard Z80 and 68000 on 16B PCB. **If your main PCB has an epoxy block at position D15, remove and replace with a standard Z80, audio will not work if you don't. If...

Any chance anyone has done a repro on the Mobo for this -8 slimstack already? If not, I will prob do one so I can I get both these slim stacks running. Could prob 3-D print a pseudo-frame/cage for it also, will see what I come up with once I get the extra bio-8 to test.

here she is all decked out:

I just picked up an untested BIO8 PCB, will get it in, and see what happens. Will report back on success / failure once I can swap that last extra board into the mix and see if anything changes. (I am sure it will)

I'll try it again, maybe I locked it right away? I will try another one and see what happens. Thanks!

bump for help

@jamesv833 you know i have a set for you on your next shipment ! Hope you enjoy.

Had to custom up some labels for my 16B. Will post some pics of the completed board once I burn, and test. These labels look awesome but they stick like crazy so I dont want to install until I know all the roms work.

I am used to opening BIN files and burning them to PROMs and Eproms, I have never used a HEX file as source with eeTools Topmax2 Here are the settings I have access to on TopMax2 for this IC:

So I have downloaded the hex file for xmcotaa to revive a dead Asia COTA. I have never programmed a PIC with my eetoold TopMax2. When I import the HEX into the buffer it says loaded and gives me a checksum of BE00h When I try to program it, it says complete but it reads as all FF I am sure I am...

I am 95.6% confident that is the case. I was going to look at BIO8 schematics and see WTF it could be for channel 1/2

The only problem is, I have extra boards for 2 of them and already tried the switcharoo. I am looking for an -8 slim BIO8 and a Mobo+cage to make a second stack.

Now, being able to get the Widel code working, I could test my hardware. I am still getting failure on Sound Test channels 1/2. i only get sounds from 3 and 4. I swapped in another audio board and got the exact same results. I am more confident that it is a hardware problem now, but do think it...