PsxChipUk Problems page

It seems that when a machine is chipped in it exhibits some sort of problem or perceived misoperation, the mod chip is the first thing everyone blames. Sorry to burst the bubble but it's not usually the chips fault.

Machine comes up with CD menu or "Insert CD-ROM" screen:


This is almost always an indicator that a wiring mistake was made.If you don't want to risk it click Here It is very important to have clean, well-performed solder connections to the board wiring points and the chip. If any of them are wrong or are poorly soldered, then the chip is not going to function properly. The chip is not the problem--the installation is. Double-check and resolder suspect connections. Make sure wires don't get trapped under screws. Make sure the wires don't short against other circuit points.

Machine plays originals fine but not backups:


This is probably the most common problem for which the mod chip takes undeserved blame. Note that erratic operation can certainly fall under this description, though it is equally likely the console is suffering from the well-known "FMV problem"--which does not concern mod chips. What is really happening is that the console is rejecting the media for one of two reasons:

1) the CD drive is very finicky about the media it is reading. The console's CD drive, while sufficient to read aluminum-layer discs, was not designed for the more stringent requirements of reading CD-R media. Given the large number of brands and formulations of CD-R media available, it comes as no surprise that some work better than others. To make matters worse, there seems to be no single brand/formulation that reliable across more than one console.This leads to problems like it works on my mates machine but not mine.

The only solution to this problem is to experiment with various brands or CD-R media to see what seems to be the most reliable for your particular console. Just remember that what turns out to be reliable on one machine may not work as well (or at all) on another. Of course, this brings up the 2nd reason:

2) This is the most common problem--the CD-R was INCORRECTLY MADE! Even the smallest mistake can result in an unusable disc. There are a number of guides available on the internet that outline proper procedures. Look for them!.

CD-Rs boot, but originals do not:

This is almost certainly a wiring error. The only way this can happen is if the mod chip signals are garbled by poor wiring or missing or improper wiring. The difference between CD-R and masked production discs in regard to booting is large enough to allow for this uncommon problem. .

"Booting" versus "Running"

This problem is another one blamed on mod chips for the wrong reasons. A mod chip is responsible for promoting a disc to the "boot screen" (aka the "black screen with the Sony logo"). Once the boot screen appears, the mod chip's job is finished. Any other problems encountered after that point are not mod-chip related! These problems include: screen goes black and system seems to "hang", boot screen never goes away, sound but no picture, and just about any other run-time problem. These problems are caused by incompatibilities between the executable software on the CD and the system kernel software stored in ROM on the console. A classic exmaple is attempting to run US discs on Japanese consoles. The only solution at this point seems to be replacing the system ROM.

Game appears in Black-and-White on the TV Screen:

This problem has been well known (its to do with the colour burst freq). I will have colour mods available soon and at a reasonable price.
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