Neo Geo:Chip Replacements: Difference between revisions
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Some chips on Neo Geo motherboards can go bad. Luckily, furrtek created some drop-in replacements for these chips. | Some chips on Neo Geo motherboards or cartridges can go bad. Luckily, furrtek created some drop-in replacements for these chips. | ||
Replacement chips: | Replacement chips: | ||
| Line 5: | Line 5: | ||
* [https://www.tindie.com/products/furrtek/neo-buf-replacement/ NEO-BUF] | * [https://www.tindie.com/products/furrtek/neo-buf-replacement/ NEO-BUF] | ||
* [https://www.tindie.com/products/furrtek/neo-zmc2-replacement/ NEO-ZMC2] | * [https://www.tindie.com/products/furrtek/neo-zmc2-replacement/ NEO-ZMC2] | ||
* [https://www.tindie.com/products/furrtek/neo-257-replacement/ NEO-257] | |||
* [https://www.tindie.com/products/furrtek/neo-273-replacement/ NEO-273] | |||
* [https://www.tindie.com/products/furrtek/neo-d0-replacement/ NEO-D0] | |||
* [https://www.tindie.com/products/furrtek/neo-e0-replacement/ NEO-E0] | |||
* [https://www.tindie.com/products/furrtek/neo-g0-replacement/ NEO-G0] | |||
* [https://www.tindie.com/products/furrtek/pcm-chip-replacement/ PCM Chip] (game cartridge) | |||
== Symptoms == | == Symptoms == | ||
| Line 13: | Line 19: | ||
* Green screen on boot, and it's not a typical [[Neo_Geo:General_Troubleshooting#Freezing_on_Green_Screen_or_CALENDAR_ERROR_Screen|calendar error]]. | * Green screen on boot, and it's not a typical [[Neo_Geo:General_Troubleshooting#Freezing_on_Green_Screen_or_CALENDAR_ERROR_Screen|calendar error]]. | ||
=== NEO-ZMC2 == | === NEO-ZMC2 === | ||
* Vertical stripes to appear on sprites. | * Vertical stripes to appear on sprites. | ||
* Completely missing audio on MVS systems | * Completely missing audio on MVS systems | ||
=== NEO-257 === | |||
? | |||
=== NEO-273 === | |||
Graphics (sprites and text) glitches. | |||
=== NEO-D0 === | |||
? | |||
=== NEO-E0 === | |||
A faulty NEO-E0 chip prevents the system or specific slots (on multi-slot systems) from booting. | |||
=== NEO-G0 === | |||
? | |||
=== PCM Chip === | |||
? | |||
== Installation == | == Installation == | ||
Revision as of 09:11, 12 July 2023
Some chips on Neo Geo motherboards or cartridges can go bad. Luckily, furrtek created some drop-in replacements for these chips.
Replacement chips:
Symptoms
NEO-BUF
- Random reboots during gameplay, particularly on a 161-in-1 cart.
- Green screen on boot, and it's not a typical calendar error.
NEO-ZMC2
- Vertical stripes to appear on sprites.
- Completely missing audio on MVS systems
NEO-257
?
NEO-273
Graphics (sprites and text) glitches.
NEO-D0
?
NEO-E0
A faulty NEO-E0 chip prevents the system or specific slots (on multi-slot systems) from booting.
NEO-G0
?
PCM Chip
?
Installation
- Remove the faulty chip with hot air.
- Remove the remaining solder on the PCB pads with solder braid if the surface isn't perfectly flat.
- Clean up the eventual flux residue with IPA.
- Place the NEO-BUF replacement board in the right orientation (see pin 1 mark), align it precisely, and solder the 4 corners using a generous amount of flux.
- Drag-solder all the sides or solder each pin individually. The small castellated contacts will "attract" solder by capillary action. Make sure none of the contacts are bridged.