dig dug power - can i put a new PS and bypas the ARII?

I've bypassed the AR/II for power, but still used the audio amp for the sound. Don't know if you just want more reliable power, or the whole board gone.
 
well, ill give you the lowdown on where Im at currently with this thing.

I turn it on and the coin slots and the marque light up, the monitor comes on and has tube glow but no visual.

i replaced the big blue and nothing happened.

i put a replacement arII in and nothing happened.

the pcb's led isnt lit, the game doesnt seem to be booting up in any way whatsoever.

should i be expecting that the board is the culprit?

i checked voltages on the arII and was getting close to 5v, but on the main board i just checked some caps to see if anything was getting through and found usually about 3v.
 
i checked voltages on the arII and was getting close to 5v, but on the main board i just checked some caps to see if anything was getting through and found usually about 3v.

Well, there's your problem :)

The power supply is working if you have 5v at the supply. But if you aren't getting 5v at the board, then something is wrong between the power supply and the board. It's usual to have a tenth of a volt or so drop, but two volts is an awful lot.

Inspect the board's edge connector and check for burnt marks, and look into the edge connector plug on the harness and examine for burns or corrosion.

-Ian
 
Well, there's your problem :)

The power supply is working if you have 5v at the supply. But if you aren't getting 5v at the board, then something is wrong between the power supply and the board. It's usual to have a tenth of a volt or so drop, but two volts is an awful lot.

Inspect the board's edge connector and check for burnt marks, and look into the edge connector plug on the harness and examine for burns or corrosion.

-Ian

If they're anything like Pole Position's setup (I have a Digdug board here... just too lazy to dig it out)... when the edge connector get's too dirty, the sense on the AR will keep ramping up voltages... a zener on the PP boards dumps the extra voltage through some a resistor, fry'ng it, and effectively shuts the board off. Atleast that's what happened to 2 of my PP boards.

If it did anything like that, you can either replace that fried part, or just run +5 and GND to the test terminals from a switcher and call it a day... Either way, I'd clean the edge connectors (pads and actual connector).

I'm sure I have that bit about PP wrong, so... I'll just expect Mark to pop in and put me in my place. lol ;)
 
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