TECH : Crystal Req?!

[paul.cawley@clara.co.uk]

[ukvac] TECH : Crystal Req?!
Chaps,
After much pissing around with Yamaha and 6502 chips, I worked out why my
Robot Monsters PCB is giving a 'sound CPU not responding' error - something
has fallen off the PCB!!!
Due to the expertly way it was packed (i.e. - no bubble wrap and a CP with
hall effect sticks crashing around all the way from the US) what I assume to
be a crystal of some kind has snapped off (amazing it is not the only
thing!)
By wiggling it when in the sound test, I get music, effects and speech, but
then it comes loose and I get a communications error!

The bit that has come off is a silver 'flat cylinder' about the size of a
fingernail - it has the following printed on it...

R X D
M P 4 9
3.579 545
KOREA

Can anyone a) tell me what it is for sure, and b) tell me where I can get a
new one to solder onto the PCB!

I'd really appreaciate help from anyone...
Thanks in advance,
Paul

 

[Macro]

Re: [ukvac] TECH : Crystal Req?!
> R X D
> M P 4 9
> 3.579 545
> KOREA

well, the important bit is the 3.579 (maybe with the 545 on the end), as
it's the frequency of the crystal (in Mhz usually)

> Can anyone a) tell me what it is for sure, and b) tell me where I can get
a
> new one to solder onto the PCB!

 

[paul.cawley@clara.co.uk]

Re: [ukvac] TECH : Crystal Req?!
Mike,
I realise this may sound totally stupid - but I have a faster crystal
(26.601712) in an old NES which is in bits!]
What will happen if I use this?!
Cheers,
Paul