Scope is a Phillips PM3217
Scope seems to work fine, but when unit is powered off the power indicator LED blinks slowly.. once every 5 seconds or so. I'm wondering if this is an indicator of 'hooked to AC' or 'standby' mode or something like that. I don't have a users manual for this piece of equipment.
Any thoughts, suggestions are appreciated.
Thanks,
Jim
Does it have batteries??? That is used for indicating the charge rate of the batteries
-- Mike McGinn "more kidneys than eyes!"
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The unit _does_ accept a DC power input.. so it wouldn't be surprising that it might have batteries inside. Other than two large 'coin slot' fasteners on the rear panel I don't see any way to open this sucker up.
Appreciate the response, any other suggestions are certainly welcome.. Thanks,
Jim
I was the Philips North American lead service guy for scopes in the early
80's. The only time that blinked in the way you describe is if the battery option was installed. It eeould be quite heavy with the batteries, so I bet the batteries themselves have been removed,but the circuitry is still there. Those two big screws on the back are the only way in. The back cover has a transformer and voltage selector on it, after removing the backcover you can slide off trhe case. Get yourself a manual. These units are based on the PM 3214 and are very reliable.-- Mike McGinn "more kidneys than eyes!"
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The unit is a fair bit heavier than a similiar sized Tektronix 2215.. so I suspect the batteries might still be inside..
Are the two big screws threaded, or quarter turn release?.. I can rotate them about 30 degrees then they stop.. I don't want to goon them unless I have to. I have this scope and two Tektronixs.. some are being sold, and I'd rather not goober this unit up trying to get it apart. But the battery option would be nice. Do you know what type/size batteries it uses?
Thanks,
Jim
As I recall we used Sonneschien 8 Volt gel cells in that unit. Three of them. They are threaded screws (or were when I worked there) on the backs of these units. If they are quarter turn release they should release the back. Generally,the batteries lasted about a year as I recall, but they can be brought back sometimes with a good DC power supply and a little patience.
-- Mike McGinn "more kidneys than eyes!"
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