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ACW IV "losing" Data?

R

Rudy

Active member
I have an ACW IV (v4.23) which went completely blank. Hamilton told me that there is a CMOS battery powered memory chip on the board. When this goes bad, the controller will lose all setup information.

After replacing this chip, a new problem has surfaced. The "token" value, which is set at $6 randomly resets itself to zero. Customers complain, "the machine took my token, but gave me zero credit". When we investigate the "settings", the token value has somehow changed to zero.

Another clue....at the last deposit, we physically had 30 more 5 dollar bills than the "audit vault count" showed. The one's, ten's and token notes were spot on. The controller is correctly "seeing" the 5's, correctly issuing credit, but I'm guessing that the 5's counter gets reset to zero somehow also???

Hamilton tells me that "losing" data is an all or nothing issue. They've never heard of a unit losing just "some" of the data.

Does anyone have a similar experience and/or suggestion?
 
I did. As an old ham operator, it was a piece of cake. The new BRAM looks different than the old RAM/battery stack that it replaces...though.
 
I've got an identical spare controller. My gut tells me that it could be one of the two parallel interface unit chips. I'm going to swap them one at a time, and then the BRAM (in case the new one is faulty), and see if the problem migrates from the bad unit to the good one. It's an intermittent problem, so I hate to inconvenience the customer's.....but I don't know what else to do.
 
49-9500 Hamilton Parts sent it to me, and I verified it a second time when issues arose. The parts list shows it as a BRAM for an ACW V, but Hamilton says it works in an ACW IV as well.
 
The problem has been solved. There's a problem with part #49-9500 (BRAM), and Hamilton is taking them out of inventory. When the display's say, "Memory Altered", the battery backup for the memory has died. You need a "SocketSaver" as the replacement, NOT a BRAM module.

Hamilton has been gracious and apologetic...........
 
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