losing sound

[vinnies]

I have the messiah 2 chip in my ps2. I am playing a backup copy of star wars bounty hunter. Every so often I loose sound . It sometimes comes back. I noticed it happens when I have a lot of activity going on. Any ideas why this could happen? I didnt adjust the laser. Is lossing sound a syptom of the laser going bad or needing adjustment?

[Headly]

Possibly the CLK wire was laid incorrectly during your install. This causes weird things with the sound.

[vinnies]

If thats the case it should happen during all game play, even with the original dvd?

[Headly]

I beleive it will happen with all sound original, backup, and dvd movie. It is caused by the current flowing through the CLK wire causing interference with other components

[charlie_ps2]

It is likely to be solder balls or residue.

You need to go over the whole board with a magnifying glass and look for left overs - small ball solders and little wires - you need to be very PATIENT and remove them all.

[ottoman]

The clock wire can only affect certain games/dvd's. It all due to electro magnetic compatibility problems i.e other circuits inducing current onto your clock wire ( causing cross talk voltage and inductive capacitance in yr clock wire.)

Simple solution.

Run another wire from the ground point of your messiah 2 chip to another ground point near the clock connection on your motherboard ( a point where the metal shield touches the motherboard will do) and twist this wire around the clock wire about 50 times ( a twisted pair).

This effectively gives the clock wire a simple shield and should solve the problem.

If u don't want to go to that much trouble then simply routing the clock wire around any major circuitry on the motherboard and ensuring that its either taped or glued to the mother board to provide a 'Ground Plane' should suffice./ This will cut down the capacitance effect.

Hope this helps!!