19 Nov
2014
19 Nov
'14
9:39 p.m.
On 11/19/2014, 5:47 PM, Josh Dersch wrote:
Hey all --
A quick one -- what's the normal operating temperature for the old MPS6540
ROMs used in the original Commodore PETs? I noticed last night after
running mine for ~30 minutes that the ROMs were very hot, to the point of
being painful to touch.
The machine is running fine as far as I can tell -- though I haven't
verified the contents of the ROMs, BASIC runs without any apparent issues.
Voltages are normal (just a shade under 5V).
I've not experienced ROM chips that run so very hot -- is this normal?
Thanks,
Josh
A fan is a good idea on older electronics. the cooler they run the
longer they last. A heat sink epoxied to the top of hot ceramic devices
is not bad either...
John :-#)#
--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"