System 7 battery pack problem
Welcome, Guest.
Portal
Please login or register.
MAACA ARCHIVES - JOIN THE NEW FORUM AT HTTP://WWW.MAACA.ORG    General Boards    Tips and How To's  ›  System 7 battery pack problem
Users Browsing Forum
No Members and 4 Guests

System 7 battery pack problem  This thread currently has 325 views. Print
2 Pages 1 2 » All Recommend Thread
ALJO
January 30, 2010, 2:13pm Report to Moderator

Complete MAACA-Wacko!
Posts
2,174
Posts Per Day
2.42
Time Online
79 days 11 hours 26 minutes
My Rat Race batteries don't hold there charge more than 3 weeks when when putting new ones in...

WHY!
Has anyone ever had this problem before?
What should I be looking at to solve this problem?
Weird problem...!

Thanks.
Claude.




                                                                       
Logged Offline
Private Message
wbradley
January 30, 2010, 2:48pm Report to Moderator

Is it an atom? No, it's multiball!
Complete MAACA-Wacko!
Posts
2,181
Gender
Male
Posts Per Day
4.03
Time Online
148 days 9 hours 30 minutes
Location
Thornhill, ON
Age
46
Something is drawing current. Somebody  needs to explain what it might be. My only thought is crossed -/+ which would consume energy as heat. Are the wires warm? I know that's a dumb question. Do any indicator LEDs or anything stay lit on the board?

Might not be worth tearing out the mpu board to find out. Maybe a timer or chip that doesn't stop when powered down.

I would ask on RGP.


Ten SS games...but 8 is my limit!
Logged Offline
Private Message Reply: 1 - 19
ALJO
January 30, 2010, 2:57pm Report to Moderator

Complete MAACA-Wacko!
Posts
2,174
Posts Per Day
2.42
Time Online
79 days 11 hours 26 minutes
Quoted from wbradley
Something is drawing current. Somebody  needs to explain what it might be. My only thought is crossed -/+ which would consume energy as heat. Are the wires warm? I know that's a dumb question. Do any indicator LEDs or anything stay lit on the board?

Might not be worth tearing out the mpu board to find out. Maybe a timer or chip that doesn't stop when powered down.

I would ask on RGP.


I'll check if the wires are warm.
Nothing stays lit on the board and I'll post on RGP too.




                                                                       
Logged Offline
Private Message Reply: 2 - 19
sylvain
January 30, 2010, 3:36pm Report to Moderator

Complete MAACA-Wacko!
Posts
1,815
Gender
Male
Posts Per Day
0.81
Time Online
18 days 2 hours 9 minutes
Location
Ottawa, Ontario, Canada
If the batteries last 3 weeks, you will surely not detect any heat,
as the decay rate is too 'slow' to generate noticeable heat.
It would be different if the batteries lasted 3 minutes!

It *could* be a bad 5101 CMOS RAM chip, or one of the mod.

Cheers,
- Sylvain.


Looking for 1966 Bally Capersville, 1967 Bally The Wiggler, 1981 Stern Viper, 1986 Pinstar Gamatron,
1986 Williams Grand Lizard, 1991 Williams Bride of Pinbot, and a few others.
Cash or some trades available. Could also repair a machine of yours +/-$ if needed, in exchange for
one machine on my want list, non-working/unshopped welcome!
Logged Offline
Private Message Reply: 3 - 19
necro_nemesis
January 30, 2010, 3:41pm Report to Moderator

Hey Bucko, you're up.
Complete MAACA-Wacko!
Posts
6,653
Gender
Male
Posts Per Day
3.49
Time Online
303 days 10 hours 42 minutes
Location
Newmarket, Ontario
Age
47
Bad blocking diode D17 on the memory protect circuit would be my guess without looking into Sys 7 specifically.



Wanted Godzilla

Logged Offline
Private Message Reply: 4 - 19
ALJO
January 31, 2010, 9:47am Report to Moderator

Complete MAACA-Wacko!
Posts
2,174
Posts Per Day
2.42
Time Online
79 days 11 hours 26 minutes
Quoted from necro_nemesis
Bad blocking diode D17 on the memory protect circuit would be my guess without looking into Sys 7 specifically.


Could you post a pic of that?
Where's the memory protect circuit?
Without a picture I'm pretty lost in that language....

Thanks.




                                                                       
Logged Offline
Private Message Reply: 5 - 19
ALJO
January 31, 2010, 9:55am Report to Moderator

Complete MAACA-Wacko!
Posts
2,174
Posts Per Day
2.42
Time Online
79 days 11 hours 26 minutes
Quoted from sylvain
If the batteries last 3 weeks, you will surely not detect any heat,
as the decay rate is too 'slow' to generate noticeable heat.
It would be different if the batteries lasted 3 minutes!

It *could* be a bad 5101 CMOS RAM chip, or one of the mod.

Cheers,
- Sylvain.


These guys say the same thing.....
http://groups.google.com/group.....m+7#dc05abf43034d22b

Where's the 5101 CMOS RAM chip?
Is it repairable?

Thanks.
Claude.




                                                                       
Logged Offline
Private Message Reply: 6 - 19
ALJO
January 31, 2010, 10:44am Report to Moderator

Complete MAACA-Wacko!
Posts
2,174
Posts Per Day
2.42
Time Online
79 days 11 hours 26 minutes
What if I disconnect the game instead of turning it off.....
Will the batteries still do the same thing?





                                                                       
Logged Offline
Private Message Reply: 7 - 19
Grauwulf
January 31, 2010, 4:13pm Report to Moderator

MAACA-General
Posts
719
Gender
Male
Posts Per Day
0.33
Time Online
126 days 6 hours 16 minutes
Location
Belmont, Ontario
Age
35
Yes, they will still drain down, the wall voltage has nothing to do with the backup batteries. You need to check D17 first and if it is okay, then look at the 5101.


Currently Owning:
Vids- Road Blasters, Road Runner, Joust, Golden Tee 2005
Pins- Back to the Future, Theatre of Magic, Joker Poker, Grand Tour, Hyperball

Previously Owned:
Vids- Far too many to list
Pins- High Speedx2, The Shadow, Mystic.
Logged Offline
Private Message Reply: 8 - 19
ALJO
February 1, 2010, 6:03am Report to Moderator

Complete MAACA-Wacko!
Posts
2,174
Posts Per Day
2.42
Time Online
79 days 11 hours 26 minutes
Quoted from Grauwulf
Yes, they will still drain down, the wall voltage has nothing to do with the backup batteries. You need to check D17 first and if it is okay, then look at the 5101.


OK.
Now, where's D17?
Thanks.




                                                                       
Logged Offline
Private Message Reply: 9 - 19
Mrhide
February 1, 2010, 6:39am Report to Moderator

Transformation
Complete MAACA-Wacko!
Posts
5,298
Gender
Male
Posts Per Day
2.42
Time Online
511 days 12 hours 49 minutes
Location
Laval
Age
38



Attachment: d17_3027.jpg
Size: 66.56 KB



Mrhide.pinnesota.org

RAA La marié de Pinbot et La Créature du Lagon Noir, Eclipse et Capt. Card
Logged
Site Private Message Reply: 10 - 19
necro_nemesis
February 1, 2010, 9:02pm Report to Moderator

Hey Bucko, you're up.
Complete MAACA-Wacko!
Posts
6,653
Gender
Male
Posts Per Day
3.49
Time Online
303 days 10 hours 42 minutes
Location
Newmarket, Ontario
Age
47
You could always throw one of these in and eliminate the batteries altogether.

http://pin-logic.com/




Wanted Godzilla

Logged Offline
Private Message Reply: 11 - 19
2 Pages 1 2 » All Recommend Thread
Print


Thread Rating
There is currently no rating for this thread
 


Powered by E-Blah Forum Software 10.3.6 © 2001-2008

Valid XHTML Valid CSS Sourceforge.net Powered by Perl