DOJ dies, people cry, buy better games instead :awe:

[Catzoo]

I just got a Black Label Eeprom, and i still got the very same message.

I once managed to get this ...
http://www.neo-arcadia.com/forum/viewto ... 60#p837460" ( second screen )

But since, nothing new

BTW, it's not a black label, how can the PCB look for battery powered ram code where it was working great for two years without battery ?

[Asure]

But, is it the patched version?
Did you check the PCB traces if they are indeed properly repaired? Any corrosion on other areas? Could be a custom that's screwy because of it..

[yosai]

Judging from the pics it's not the EPROM that's the problem.

[Catzoo]

Up ! I may have found something interesting. I'm not that good in electronics, but near the battery, there is 6 resistance bars. I tried to check them with a multimeter, and i got several values, decreasing as far as i'm testing.

Ex : Try Pin 1 + 2 = 1200 , Pin 1 + Pin 3 = 1100 etc...

All values are the same on each resistance, except one : the one near the battery. Where every values is within 600 and 1600, one resistance on the battery side goes crazy values, showing like 1900 then " 1 " , like if it was over the maximum value available.

Do anybody have the value / model of those resistances ? If that's the cause of our problems, it's just a 20cts component ... I'd love it was that easy, but it's worth the try to switch that one if it's defective. Any ideas ? Anybody with dead doj tried to check thoses resistances ? Maybe compare our values ?

Sorry if this means nothing to electronics specialist, i just try to understand what every component is doing, and if it's doing it right ...

[Asure]

Those black bars are resistor networks.
Usually, pin1 + x is some value. Sometimes, they are used as a ladder, or sometimes simply 1K X 10, whatever.

You can see here what is exactly inside them.


Anyway, i cannot see any part numbers on them, have no idea what the values should be, and have no PCB.
But, there should be a number written on them.
(If they are all the same, they should all measure the same.)

It is unlikely that a resistor is the cause of this, but it could be some pulldown or pullup which is wired to some bigger part..
You should post all the values of a 'good' one plus the setting you used on the meter to measure them.
1+2 = ?
1+3 = ?
1+4 = ?

And so on.

[Catzoo]

Thanks for thoses precious details !

Here's some random values, put my multimeter into continuity (always show 1, bips when contact)

1X2 : 1245
1X3 : 1389
1X4 : 1244
1X5 : 1388
1X6 : 1244
1X7 : 1389
1X8 : 1243
1X9 : 1388
1X10 : 646

here's what i got on 5 bars

On the last one, i have :

1X2 : values going crazy from 1700 to 1
1X3 : same
1X4 : same
1X5 : same
1x6 : 1240
1X7 : 1385
1X8 : 1240
1X9 : 1384
1X10 : 645

Each resistor had written on it : RSEC3°

I have an old dead CPS board where's the same resistors bars, but it's written CRE43°72, i thought i may try to replace the dead one with one of thoses if the values where equel, but it's not the case, i always got values like 600. Anyway, did thoses values have any sense when they are plug to the PCB ? They are not interfering each others ? I mean, can we really test resisstors that are solder to PCB ?