Any mods to be done on a PS1?

As the title asks,are there any mods I can do on the PS1?

I have 2 PS1s,one is a 7502 and another is a 5552. Both are chipped with 5 wire chips,and one of them has the colour mod done. (the 7502 to be exact)

The 7502 has the case painted (original was too beaten up to be used,and also was rusty).

Any other mods I can do on the 7502?

NOTE:Stealth,Mayumi and ANYTHING of these are out of the question since I don't have the money for a programmer,neither parts to build one nor the money to buy one from overseas until next month.

 

Sorry if this is counted as doublepost but......

Is there any colour correction mod for the SCPH-5552?

NOTE:For anybody out there,I won't use RGB. Period.

 

May I ask why you wouldn't want to use RGB?

 

Yes, there is - but it's significantly more complicated than the one for the SCPH-7502. You need to build a 4.43MHz oscillator (PAL subcarrier frequency) and then lift pins 6 and 7 on the CXA1465 video encoder and wire the oscillator output to pin 6 and ground pin 7. This forces the encoder into PAL mode all the time, so it will generate PAL60 when you run an NTSC game.

 

Sounds strange,but I like the composite dot crawl.

Second,there's no kind of cable in my town.

Third,my TV tuner card (Winfast TV2000XP)does NOT support RGB at all.

Long story short,I will never use RGB even if I'd have the cable to do so.

I've just found a diagram. Anyways,what's with the jumper wire between pin 1 and 7?

Picture I've found is this:

 

Jumper wire is because the pin 1 of the CXA is ground, thus you are grounding the pin 7 - saves you soldering two cables to the single point for ground. Its the same reason why you solder to pin 12 - in this case to get at the +5V rail. You could again use any 5V source from the board.

You may use any part of the ground plane of the PCB if you wish - such as that part that has no solder mask next to the CXA

 

You don't have access to any TV set with a SCART socket?

 

The only one I have with SCART does not support RGB.

 

Seems I'm out of luck. The only 4.43MHz oscillator (or quartz if you want)I've found has 2 pins and I don't know any way to wire wire a 2 pin oscillator to work the same way as the QXO-1100. (or any 4 pin oscillator)

If anybody knows how can I wire a 2 pin 4.43MHz oscilator to work on it then I'm here to listen.