wxforecaster
Member
Let's keep the Dig Dug theme going here.
While I await the cap kit, HOT, etc...from Bob to continue work on Dig Dug I (cocktail), I figured I'd begin troubleshooting Dig Dug II (upright) that I acquired for a little more than a Benjamin the other day.
The Power Brick all tested good:
1,2,3 -> 4,5 all tested between 10.6 and 11.7V DC
6-7 38 VAC
8-9 6.8 VAC
10-12 64 VAC
13-15 64 VAC
The AR II board also tested good:
10.3 un reg was ~11.5 VDC
+SENSE was spot on at 5.00 VDC
When I connect the PCB:
The 10.3 unreg drops to 9.4 VDC
The +SENSE drops to 4.3 VDC
What I know:
- Coin door and cone start buttons light
- Hitting a credit does nothing
- Board LED is lit
- Speakers produce an audible hum (almost like a 60 Hz hum)
- Monitor has neck glow. B+ is dialed in at 120V. After a minute or two of warmup, I get a faint white glow on the monitor. I must admit, it has severe burn in and probably should be sent curbside if I can save the chassis/neckboard.
Much like cocktail DD, I think this one may have both PCB and monitor issues. Anyone in the Kansas City area have some free time before turkey day and a working monitor?
Now that I've typed this, I'm not even sure why, other than as a place holder for a repair log
Any words of wisdom would be great.
Evan
While I await the cap kit, HOT, etc...from Bob to continue work on Dig Dug I (cocktail), I figured I'd begin troubleshooting Dig Dug II (upright) that I acquired for a little more than a Benjamin the other day.
The Power Brick all tested good:
1,2,3 -> 4,5 all tested between 10.6 and 11.7V DC
6-7 38 VAC
8-9 6.8 VAC
10-12 64 VAC
13-15 64 VAC
The AR II board also tested good:
10.3 un reg was ~11.5 VDC
+SENSE was spot on at 5.00 VDC
When I connect the PCB:
The 10.3 unreg drops to 9.4 VDC
The +SENSE drops to 4.3 VDC
What I know:
- Coin door and cone start buttons light
- Hitting a credit does nothing
- Board LED is lit
- Speakers produce an audible hum (almost like a 60 Hz hum)
- Monitor has neck glow. B+ is dialed in at 120V. After a minute or two of warmup, I get a faint white glow on the monitor. I must admit, it has severe burn in and probably should be sent curbside if I can save the chassis/neckboard.
Much like cocktail DD, I think this one may have both PCB and monitor issues. Anyone in the Kansas City area have some free time before turkey day and a working monitor?
Now that I've typed this, I'm not even sure why, other than as a place holder for a repair log
Evan
