JammaCon Update

Completed the Playstation adapter for the JammaCon a while ago and came across various controller converters for Playstation to Xbox etc so decided to try out a few with the JammaCon setup.
The only problem is finding games suitable to play with a single joystick and on screen text can be difficult to read due to the small size of it - games aren't optimised to run at these low resolutions.

The converters I used were 'Ostent 3 in 1 Converter Adapter Cable' for XBOX, USB & Gamecube and a 'Universal Adapter for XBOX360'

Playstation 2 in action

XBOX

No real problems with this one. Setup is very straightforward and AV quality is very good using a standard XBOX Scart cable.

XBOX with modified dashboard

Metal Slug 4 - XBOX version not arcade

XBOX 360

Needs a XBOX 360 specific Scart cable for this. The buttons worked straightaway but getting the directional controls to work took a few attempts with various combinations of the plugging in it sequence.

XBOX 360 Dashboard

Playstation 3

Using a Playstation 2 AV Scart cable for this, the Display settings must be reset/reconfigured before it will work though.

Playstation 3 - Ducktails

Neogeo MV-1FZ Repair

Picked up a NeoGeo MVS with 'Backup Memory' error on boot. It was a solid fault returning a read/write mismatch on the same address every time -  0x00D00010 0xB255 and this is the first address in the backup memory region.

First step was to replace the rechargeable battery and inspect for and damage caused by battery leakage. In this case no damage was found so the root cause of the backup memory error elsewhere.

Probing around indicated a defective 74HC32 which is part of the decoding logic for the backup memory. 

Decided to use Chipquik to remove the device rather than hot air - Chipquik is a low melting point alloy that says molten for several seconds allowing you to remove smd devices easily.

New battery and holder fitted

The original 74HC32 came off the board easily and no damage to the PCB as the temperature required to remove it was low. 

Original chip removed and pads cleaned

The replacement part was slightly narrower that the original package size but fitted ok. Board booted up perfectly afterwards with no more memory errors.