[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Ramworks III
mdj wrote:
Michael J. Mahon wrote:
fixme1@gmail.com wrote:
Hi, I have a Ramworks III card in my platinum IIe and its making a high
pitched whining noise, especially when I run the XPS Diagnostics IIe
disk. Apple Works is only showing that I have 56k available memory
too. The card is populated which equates to 1 meg of ram combined.
64k on the motherboard and the rest is on the Ramworks III card. Could
the whining noise be attributed to a failing chip or failing board? I
hope this is not the case. Any help would be greatly appreciated.
Thanks
It's not the RAMworks board making the noise--there's nothing on
the card that is capable of making a noise.
Well, I'm not prepared to postulate that the innards of an tiring
electrolytic capacitor couldn't resonate and make a sound, but I
suspect Micheal is correct.
I've observed a lot of electrolytics in various states and have
never heard one make a sustained sound. If it could happen, it
would be with a strong high frequency AC voltage component applied,
which could not be the case for any capacitor outside the power supply.
My first step would be to eliminate every non-essential card from the
system and retest, followed by reseating IC's on the RamWorks, and
trying an alternative power supply.
Actually, doing anything that changes the load on the power
supply is likely to change the sound, or even eliminate it.
Plugging in another RAMWorks card might be the definitive way
of showing that it's not the RAMWorks card--since I expect that
the sound will continue with a different card.
-michael
NadaNet networking for Apple II computers!
Home page: http://members.aol.com/MJMahon/
"The wastebasket is our most important design
tool--and it's seriously underused."