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I had issues with random freezes and sound dying on me which is pretty much why Darksoft was nice enough to post the functions of each SN74LVC4245A group here. https://www.arcade-projects.com/threads/romset-to-verify-your-cps2-kit.11886/ I had replaced the ICs in question and things got worse...

I just fixed this exact issue by replacing the octal buffers for qsound. I have a heap of sn74lvc4245 chips spare if anyone else needs there kit fixed

Did you find the cause? This is exactly the same as my multi kits issue, and I feel it's the sn74lvc4245 chips failing to blame.

UPDATE I removed the first 8 sn74lvc4245a from the kit and its running the same. Guessing its them or something else further down the line?

I have a cps2 multi kit here that had its sound die out then later fails on Qsound ram checks. Its not the A or B board, both have been swapped and the problem follows the multi kit. I found that the Qsound ram issue can be from poorly seated 1 2 roms, which the multi has no pin connections to...

The issue is the Multi, it's not my SD card or anything as you should know both test roms verified fine, and its not even required after a successful flash. You relinked my thread that I already linked in my last comment as a recommendation lol. A rework may be in order as the board has been...

@Darksoft Multi sound cutting out or hanging Tested with another A board and did a rom swap and key write with Vampire Saviour rom chips on my B boards. The multi just gets worse every time I get a chance to turn it on. No sound at all this time except the ocassional high pitch beeping for a...

@Darksoft The model number of the level shifter is SN74LVC4245A but what type? APWT or ADWR? My multi is getting worse with age, now it wont post sound at all and just today stopped running games at all, just a solid color screen. The test roms verify fine, no errors show on the LCD after...

Thanks for the thorough reply. Cant wait to lift this curse :)

I only ordered 6 SN74LVC4245A. Flashes 3 and 4 are different chips are they? Preflashed on your end or something I can buy and fit?

"checking the flashes with the specific romset that we have for that" ? Is there a diagnostics romset I was not aware about? Please point me towards them ill put them on the SD and test straight away.

Darksoft have even recommended me for repair work before, where I had to diagnose a users faulty install which turned out to be a cut trace next to a jumper hiding under some white markings. Found and fixed the issue straight away on that users Multi.

Had it for a year, used it for stuff all time. It obvious its a Qsound issue from my posts, and Ben Fong said he had to replace them for the exact same reason too, sound cutting out after an undetermined period of time. Hes sound was also scratchy which mine is not, thats the only difference...

You missed the part where I said I put the original Z80 back in mate. It doesn't happen on your Multi l_oliveira because yours is not faulty obviously. I did say how I used this on 2 different A+B boards and had the same results, maybe you missed that.. I explained my issues in great detail...

BUMP @l_oliveira ?

Take the little top bit of plastic off the ribbon cable, mine was fouling by that couple of mm. I super glued it together.

I should note that I socketed the v4 and have replaced the z80 with one from a neo-geo, and then put the original back in. Bad solder on both A+B boards is a long shot considering exactly the same issue is occuring no matter what combination I use. I havent tried decrypted roms because the...

Thanks for the fast reply. Do you know why with a Multi kit installed that chip would run hotter? Because it does it on both my B boards. Maybe mine is faulty, maybe it has gone unnoticed? I have tried running the kit without case, and painstakingly beeped out every pin on both setups. All...

So the v7 with multi cut audio after around 2hrs of gameplay. Its not loose pins or contacts as everything checks out fine across 2 different b boards when connecting the multi and the games run fine for an hour or so till the audio cuts. Pressing on the multi, shaking the CPS2 and yelling at...

Did some more testing, removed the wire from my v4 B board gpal pin 9 to multi, wired direct to cn3 C13. Sound died while I was sleeping. Did a battery and full romswap from an unopened v7. Nice that we can write keys to save boards like this. The process went smoothly. The v4 now has stock...