JAMMArcade.net – Page 167

Super Pang repair log

Dec 252014

Got this original Super Pang PCB from my friend ‘Mikidaffy1983’

He asked me to desuicide it (picture above is actually from the board already desuicided) and, as usual, I followed instruction here:

https://www.arcadecollecting.com/dead/pre-cps.html

All went good but when I tried the board I noticed wrong colors on some backgrounds/sprites:

Studying a bit the hardware I found that the color RAMs are located @8C and @9C (two 6116) so I started to analyze them with my logic probe, this revealed that some data lines of 6116 @8C were inactive.Desoldered and tested it out-of-circuit confirmed it was bad:

Fitted a good 6116 RAM brought colors to normal.

705 entries!

General Comments Off

Dec 242014

Today we passed a milestone. Over 700 entires are now in the archive.
There are most likely more dumps than entries as some unknown ones are in ZIP files as a set.

Thank you everyone who has contributed over the past 3.5 years that this project has been running.
Please keep submitting them if you have them.

Enforce PAL dumps added

PAL Updates Comments Off

Dec 242014

Ive added a set of 10 PAL dumps from Taito Enforce.
They are all in their original format right now and are untested so please test them out if you can.

Air Buster : Trouble Speciality Raid Unit repair log #1

PCB Repair Logs, Repair Logs Comments Off

Dec 242014

Bought this mint original Kaneko Air Buster PCB from my friend Corrado:

PCB was working fine but sound samples (drums, bass line, etc..) were played sometimes randomly other times in a bad way:

In this PCB (and a lot of other similar audio hardware) samples are played by the OKI MSM6296 chip which take DATA directly from the ROM that I dumped as good.Connecting an external AMP to pin 36 of the OKI6295 (this pin is the digital-to-analog converted signal fed into the UPC324 OP-AMP, you can download its datasheet here in the downloads section ) I had the same issue so this convinced me to replace the chip (with a rebadged one but it’s the same):

This restored fully music/FXs.Job done.

Choplifter PAL dumps added

PAL Updates Comments Off

Dec 232014

We have had a zip file for Choplifter in the archive for a while now and I finally got the chance to test them.
One of them was a CK2605 which I dumped myself as a PLS153 and is assumed working but the other two were from a PAL16R4 device and they both work fine.

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