Sega rally: Do i need the communication board?

GAMINGHEAVEN

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hi all

i was just wondering if the sega rally boardset needs the communication board to function correctly for a single sit down machine as i have removed it from an apparently faulty board set

i now found out one of the wires on the main power loom to the boardset was shorting so i sorted this and now get a stable static screen of square running criss cross fine lines of colour


do i need to plug the communication board back in to make the boardset work right?!

thanks in advance
 
Not all will work without the comm board...

If yours isn't booting then put the board back in...

If it is stuck waiting for another game to talk to it then plug in one of the cables to connect the transmit to the receive on that board and it will talk to itself and boot.

RJ
 
Not all will work without the comm board...

If yours isn't booting then put the board back in...

If it is stuck waiting for another game to talk to it then plug in one of the cables to connect the transmit to the receive on that board and it will talk to itself and boot.

RJ

Alternately, on most Model 2 games, you can get into the menu during boot if you hit test before it tries to link. Might take some tricky timing and a powerstrip but it is what it is.
 
Not all will work without the comm board...

If yours isn't booting then put the board back in...

If it is stuck waiting for another game to talk to it then plug in one of the cables to connect the transmit to the receive on that board and it will talk to itself and boot.

RJ

thanks for all this info


for the above comment can you just explain this a little more so you mean using a fibre optic lead - i think i have one for my home cinema system, and connecting it from one terminal on the filter board right to the other one next to it?


thanks
 
Yup... that's it. You connect the transmit to the recieve with a single cable.
 
Yup... that's it. You connect the transmit to the recieve with a single cable.

thanks thats great

i will first plug in carefully the communication board tomorrow - see if that works

then try a rest with optic cable like you said if it does not

my only other worry wa sif i connected all the wiring loom connectors on the filter board right, i am pretty sure i did, one of the connectors had a connector block with 10 holes going into 9 pins, i found it would only work if i connected starting at pin 2 not 1.

anyway without comm bard i am now getting some screen so i will see how it goes tomorow, might need help to double check the filter board connections if not

the only other poss issue is there is a broken pin i think feeding into the rom board from the other board below, a friend said as it so the end it might not be used and also it might be long enough to connect anyway - we shall see and if i have no joy might see if i can repair that, then retry

thanks loads


paul
 
update:

the optical cable did not reset anything

and no mates at hand to turn on the cab when i have button depressed


i am thinking it is a board fault then with that type of static garbage on screen?


i do have some beaten up bards i could try and swop out which might be functional - it is more likely to be the cpu board or video board

also i did not mention i discovered there is a half broken pin at the end of one of the connector blocks going into the communictaion board from the board below it

a friend told me that the pin might not be used anyway as its right on the end [centre pin closest to the filter board sitting in the middle line of the boardset

he also said it cant be repaired

also does any one have a pic of the correct cabling into the filter board as i might have done it wrong?!

thanks
 
garbage screen, surely board fault.

even without comm board, the screen should shows some texts.

which board? might be rom board or cpu board. most of the time is rom board. it doesn't necessarily there's some corrupted mask roms, but i found usually because of the pcb itself (likely because of you bend them to much when pull it off from the boards stack. that's why when you're going to swap them to know which one is bad, you should very carefully not to bend the board too much.
 
thank loads for the info

maybe i will try to locate a spare model 2 rom board then swop the roms

anyone got one available to buy - as long as its model 2a does not natter what game it is?

thanks

paul
 
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