Porchy

Job lot of broken boards

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Apr 282011

Got a box of broken boards from a guy on the Jamma+ forums.
Included are:
Rastan Saga – white screen
Hot Shots Tennis – constantly resets
Mortal Kombat – messed up controls
Seibu Soccer (Seibu) – no sound, very low
Karate Champ – non jamma pinout, looks clean though
Taito F3 Motherboard – no game to test it
X-Men Vs Streetfighter – Working
Sega STV Titan Motherboard + Die Hard Arcade – games dont load
Two Crude – all the ROMs are missing
Street Fighter 2 – bootleg – intermittently working
Another Street Fighter 2 bootleg – Dead, all roms and rams are dead, not worth fixing

The X-Men vs Streetfighter board is fully working and even has a working battery.
The SF2 bootleg is intermittently working, looks like the M5 bootleg.
All the other boards have the fault the guy stated.
Im pretty pleased with this lot.

Fluke 9010a Ver 3A upgrade

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Apr 272011

While I had the Fluke opened up today, thought I might as well install the upgraded ROMs, not sure why just felt the need to.
The ROMs that are available online for version 3A are doubled up into 3 x 16k files, to be installed I needed to split these files and match them up to the originals.
Here is the .ZIP file with all the split ROMs labelled properly.

Fluke 9010a v3A Files

SEGA Naomi super capacitor

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Apr 252011

The Naomi has a 0.1F super capacitor on board labelled C29, in between the button cell battery and the 8 pin DIP labelled 315-6188. This capacitor is a usual suspect on a broken board as it is prone to leaking and damaging the traces to the serial EEPROM. If you own a Naomi board (not sure if it applies to the Naomi 2) you should check the condition of this cap and replace it.
The capacitors can be ordered from the links below:
CPC
Farnell
Mouser

Retrobright attempt

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Apr 222011

After reading a simple guide by 1200xl over on the RCM forum, I decided to give this retrobrighting thing a go.
Retrobrighting is a process of removing the yellowing that tends to occur on old plastics. I’ll not go into the science behind it cause i don’t really know it.
As a test subject I used the casing of one of my Fluke 9010a pods.

I ordered some peroxide online and this Saturday was the ideal day to try as to make this work, sunlight is required.
Apply a nice thick coating of the peroxide to the washed down plastic and wrap it in clingfilm, then place it in the sun for a few hours turning it every so often to get all sides.
Probably should mention that rubber gloves are a must for this job as the peroxide doesn’t feel good on bare skin!
After its been roasted, remove the clingfilm and wash off the peroxide and let the plastic dry.

Pleased with the results for a first attempt and have since don’t the body of the Fluke with better results.
I was advised to apply a UV treatment after this as the yellowing will return but at this point I haven’t got any. I’ll get some ordered though.
Will no doubt have more stuff to do in the future.

Fluke 9010a ROMs Ver 2B ROM dumps

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Apr 222011

Got around to dumping the ROMs today for backup purposes.
The version installed is 2B (or 2.1 according to the stickers). I know there is a v3a kicking about somewhere but no one knows what the differences are between them so I wont bother upgrading mine.
The naming scheme for these is taken directly from the ROM stickers.
Also included in this ZIP is the MCU dumps for the keyboard and the tape drive unit.

Fluke 9010a Files

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