(Topic ID: 149031)

Date and Time set, but doesn't update when BSD machine is off

By hotquac

8 years ago



Topic Stats

  • 7 posts
  • 3 Pinsiders participating
  • Latest reply 8 years ago by barakandl
  • No one calls this topic a favorite

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#1 8 years ago

Hello!

I finally have become a pin owner and got a BSD.

The machine is mostly working and playable, but I've noticed that the date and time don't update when the machine is powered off. It will retain the last known date and time when it had power.

Has anybody run into this before?

#2 8 years ago

It probably has NVRAM installed? The other thing is the ASIC pin that gets the battery voltage for the RTC is floating in the socket???

Remove the backglass, take a peek at the MPU board. Is the RAM a FM1608 or some flavor of NVRAM?

#3 8 years ago

So I looked for the RAM and found that it is standard volatile RAM (Wingshing ws6264llpg-70 1125g)

I do not think that's the problem.

How can I check for the ASIC pin to see if it's seated properly?

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#4 8 years ago

Did you check battery-voltage ?

#5 8 years ago
Quoted from zaza:

Did you check battery-voltage ?

I did not, but, I just replaced them with fresh AA batteries. Gonna run to the store and come back to see if that was the issue.

#6 8 years ago

New batteries seemed to fix the issue!

Thanks for the input, guys.

#7 8 years ago
Quoted from hotquac:

New batteries seemed to fix the issue!
Thanks for the input, guys.

Batteries must have been low enough voltage to retain the RAM contents, but not advance the RTC.

The 6264 RAM will still hold at damn near 1v it seems.

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