qbert qubes...help!

I'm pretty sure that Qubes and Q*bert share the same PCB...

Does yours look like this?

dscn3895vj0.jpg
 
yes, the board looks like a qbert board which i was expecting, but here are some close-up pics of the roms:







i am not an expert but they just don't look original to me...i was expecting them to look similar to original qbert roms (i.e. to say "gottlieb" on them). also the pcb has a sticker on it that says ""UPGRADED TO QBERT'S QUBES" lol.
 
oops, yes mylstar, my bad. still...the roms just don't look "official".

found this picture on crazy kong and my pcb does not have the daughter board:



in the manual for qubes on basement arcade, it says the daughterboard is required to increase (double) the memory. so i am thinking this is almost definitely a homemade conversion, might not even fully work, and probably was not worth what i paid for it. :(
 
That's no bootleg PCB. The ribbon cables on the daughter board of the original qbert qubes always develops problems. You have a great fix in that the codes in the eight 2764s on the daughter board were combined into four 27128s and eliminated the need for the daughterboard. Much more reliable and draws less power and runs cooler. I do that automatically to every qbert qubes that I repair as every qubes I've worked on has one of the ribbon cables with a flakey connection or develops one. The main board was either converted from a qbert or the roms were refreshed. The changes from a qbert to a qbert qubes (both use the same pcb) are documented in the Qbert Qubes manual that you can dl from the KLOV site.


Bill
 
I'm pretty sure that Qubes and Q*bert share the same PCB...

Does yours look like this?

I just love the huge foil-backed piece of cardboard shield. Nothing like slow-roasting to help the hottest components on the pcbs, especially the power supply board, run hotter and eventually self-destruct. You can see all of the discoloration of the power supply pcb from component heat in the picture. If you feel that you need this shielding, I'd consider replacing it with a metal perforated cover for better cooling.

Bill
 
I just love the huge foil-backed piece of cardboard shield. Nothing like slow-roasting to help the hottest components on the pcbs, especially the power supply board, run hotter and eventually self-destruct. You can see all of the discoloration of the power supply pcb from component heat in the picture. If you feel that you need this shielding, I'd consider replacing it with a metal perforated cover for better cooling.

Bill

Cover? What cover? You mean the wood and metal "behind" the PCB? Should I remove these?

When I bought the machine it had a original silver cardboard "shield" over the PCB's.
 
Cover? What cover? You mean the wood and metal "behind" the PCB? Should I remove these?

When I bought the machine it had a original silver cardboard "shield" over the PCB's.

The cardboard "shield" - to me it's an aluminum heat deflector. I don't know if you can do away with it for RF shielding as I've never owned a Qbert cab, but it certainly is not helping the heat situation.

Bill
 
The cover does nothing but hold heat in, throw it in the trash.

I did that... However, Mr. Bill is referring to the silver shield behind the PCB's. I actually am agreeing with him that it really shouldn't be there. What is interesting is that Frenzy (and Bezerk) also have metal behind them. What gives?
 
Its emi shielding...supposed to be. Not neccesary but its not hurting anything sitting behind the pcb. Its the one that covers the front of all the boards thats the problem. They restricted airflow to a power supply that already runs 10x hotter than it should.
 
I did that... However, Mr. Bill is referring to the silver shield behind the PCB's. I actually am agreeing with him that it really shouldn't be there. What is interesting is that Frenzy (and Bezerk) also have metal behind them. What gives?


I was talking about the cover, not the underside. However, removing the foil from the underside would not be a bad idea.

Bill
 
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