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. | |||
Replacement chips: | |||
* [https://www.tindie.com/products/furrtek/neo-buf-replacement/ NEO-BUF] | |||
* [https://www.tindie.com/products/furrtek/neo-zmc2-replacement/ NEO-ZMC2] | |||
== Symptoms == | == Symptoms == | ||
=== NEO-BUF === | |||
* Random reboots during gameplay, particularly on a 161-in-1 cart. | * Random reboots during gameplay, particularly on a 161-in-1 cart. | ||
* 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 == | |||
* Vertical stripes to appear on sprites. | |||
* Completely missing audio on MVS systems | |||
== Installation == | == Installation == | ||
# Remove the faulty | # 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. | # 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. | # 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. | # 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. | # 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. | ||
Revision as of 08:45, 12 July 2023
Some chips on Neo Geo motherboards 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
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.