I've got an interesting phone call:Defender and Zaccaria Dodgem!!!

[Belike]

And finally I took back the cab from my old friend, he replaced the 4116 rams with 4164s and installed new batteries.

That crap WG was also replaced with a beautiful Hantarex MTC 900


An the game runs great with a crystal clear screen
http://www.youtube.com/watch?v=5MvBBumCyVs

Stay tuned for some cpo restoration and replacing that ugly joystick.

[Superully]

And finally I took back the cab from my old friend, he replaced the 4116 rams with 4164s and installed new batteries.

i need to replace those rams on my defender as well - and have to check the battery. for some strange reason it's draining power extremely fast!

congratulations on having the defender up and runinng, i wish i had a repair guy around here as well.

[Belike]

Thanks Ully, you can check some tutorials here from that ram replacing method.

[baritonomarchetto]

[...] and have to check the battery. for some strange reason it's draining power extremely fast!

Ully, you should check the diodes on the board: if it's draining the battery fast (you have a battery hack if i remember well) there's more likely an "almost"  short somewhere... i bet it's a diode 

Great machine Bela!

[level42]

On which board did I install the battery mod Ully, it was Joust 2 right ?

Is that still OK ?

[Superully]

On which board did I install the battery mod Ully, it was Joust 2 right ?
Is that still OK ?

You did the battery mod on J2 AND on Defender. Remember that we had problems with the J2 battery drainage as well? Haven't checked it in a while because it's at my mom's place. Will have to get an up-to-date reading at the weekend to see where it stands ... I'll keep you posted.

[level42]

I did use the correct diodes right ? Those special one's (glass-type)....

It's working absolutely fine on my Berzerk, but then again, that one is powered on every once in a while.....not that long though...I think the battery is doing it's work 95% of the time...

[Superully]

I did use the correct diodes right ? Those special one's (glass-type)....

diodes? didn't you just solder on a battery along with some wires?

you replaced a diode on the J2 after the battery was draining so fast - but as i've said i haven't turned it on in a while because it's not up in my apartment ... will check at the weekend!

[Superully]

back with battery results:

Joust 2 is down to 0.040 volts (basically totally empty), i didn't have the cabinet turned on a lot over the last year because it's at my mother's place, probably not more than half an hour!

Defender is down to 0.140 volts, i replaced the battery only a couple of weeks ago.

is it safe to say that the installed battery mod is not working as it should? but perhaps we should not discuss it here ...

[level42]

I'm really disappointed by that....weird. It seems the Williams chip draws (a lot) more energy then the one in the Berzerk....

[Superully]

I'm really disappointed by that....weird. It seems the Williams chip draws (a lot) more energy then the one in the Berzerk....

don't worry, andré, we'll hopefully get there. honestly, i can't remember what you did, it just looked cool . i found this bob roberts site. it that what you did? did you also use a wire?

[level42]

Yep, that's exactly what I did.

Maybe stupid, but what kind of (brand) batteries did you use. I know there are extremely cheap Chinese one's on the market that suck....