WILLIAMS FIREPOWER

[lenoz]

Hi all, I replaced the 3 AA backup batteries from my machine & when I turned it back on it always comes on with test mode 4 and cannot get game back to normal - any suggestions please ?

[Steevsee]

This is from http://www.pinrepair.com/sys37/index2.htm#factory

Dead batteries (or worse, dead corroded batteries) will cause problems getting a system4 to system7 game to power-up properly. On these games, if the batteries are dead, the game can still boot, but will come up in "audit" mode (system3 games do not have this boot-up audit mode). To get to attract mode, turn the game off and on again quickly. If done fast enough, the game should come up in attract mode. Note on System6 and System7 games, the coin door *must* be open for this to work (memory protection switch open).

If the game still doesn't come up in attract mode, even with the "turn it off and on quickly" trick, the CMOS 5101 RAM chip at IC19 is probably bad.

Please refer back to the Batteries and Battery Holders section for more information on this subject, including how to test the batteries, blocking diode D17, and the CMOS 5101 RAM at IC19.

Any signs of corrosion around the battery Holder?

[pinnies4me]

And make sure the batteries are in the right way - as they all face the same way it can be a little counter-intuitive.

[ddstoys]

Also the holder loose tension and dont make contact with the batteries

[lenoz]

Thanks all for quick replies, have looked and tried each of these ideas but still no luck, battery holder is after market addition & doesn't look very old - can't believe my luck, thought it would be a pretty simple & innocent thing to do seeing as i recently purchased machine & didn't know how long the 'noname batteries' were in place for.

[ddstoys]

Try givving he game a quick turn on then off then back on again real quick

[lenoz]

Did that thx DDSTOYS but no luck still, does anyone know what the default dipswitch settings (behind the backglasss) should be normally set at ? , also if it is any help when game is turned on the display on player 1 is 1497 2

[Boots]

Have you tried cycling through some audits using the test button inside the coin door?
This usually gets my Time Warp going.
It always happens if I let the batteries get flat.
New batteries and a bit of messing around gets it going.

[goodolddays]

1497 2 means game is botting to audits mode .. doesn't really help with telling you why .
I quick turn off/on a few times doesn't work , and batteries are around the right way , and there is continuity from the battery holder to the CPU board .. try changing the batteries again (or check the voltage of the battery pack) .. typically this symptom (only booting to audits mode) means game is detecting backup battery voltage is too low .. especially if the game was botting up properly before you changed the batteries .. unfortunately there could be something else wrong though .. have a read here

http://www.pinrepair.com/sys37/index1.htm#battery

[goodolddays]

Damn .. I spelt booting wrong twice 

[lenoz]

Thanks goodoldday, my machine has a after market battery holder that sits on the floor of back panel, there is no problem with voltage etc going to cpu board as i tested all this etc, damned if you do damned if you dont decide to change batteries as i thought this would be a good thing to do as I only purchased this a couple of weeks ago, had a play with audit tests also, but no luck.

[lenoz]

Would any of the fuses have anything maybe to do with this ?

[ddstoys]

I had a remote battery pack in a machine that had this tiny little on of switch which i knocked when i changed the batteries 

[lenoz]

Had a close look at that too, but Iam getting power to the board.

[goodolddays]

Probably a silly question but did you have the coin door open when you tried to switch it off/on quickly ?
Are all 3 balls in the ball through?

Rgds
Dave