Philips/Fluke PM3070 oscilloscope losses stored values when switched off.
Hi.. My dear Philips/Fluke PM3070 oscilloscope has a problem. Normally it stores the values of the voltage scales, time scale and other things when i switch the PM3070 off. When i switch the pm3070 on again the settings are restored. But since a few days the settings are not restored. The PM3070 now starts up with no A and B channel visable. I have to push on AUTO SET to get them back. Then every thing seems to work again. Fluke told me in some PM3070's are two penlights batteries inside. But i do not see them. And i can not see any other battery. Here are several pictures of the inside http://home.wanadoo.nl/hihihi/pm3070/index.html What could be the problem ? How to solve it ? Thank you very much. -- email hihihi wanadoo nl |
Philips/Fluke PM3070 oscilloscope losses stored values when switched off.
Ancient_Hacker wrote:
Ideally you should look in the manual for the scope to figure out exactly where the cells are. As a poor hobbyist i bought it on a second hand market. No manual. Without a manual, you'll have to peel up a few Pc boards for better seeing. No battery found. I have just looked inside again. With a mirror i could see (almost) everything. Only a extremely small battery would not be noticed. I see no batteries, of the penlight type, nor any other type of battery. Has anyone a idea how the current settings are stored in this Philips/Fluke PM3070/021 oscilloscope ? I just noticed you can get the channels back by pushing the A/B button. Not only by pushing the AUTO SET button. The channels are then on the most sensitive scale. Maybe this info helps to identify the problem. Take care. Wise words :-) I was nervous :-) Everything went well, the scope still works :-) .. -- email hihihi wanadoo nl |
Philips/Fluke PM3070 oscilloscope losses stored values when switched off.
hihihi wrote:
Normally it stores the values of the voltage scales, time scale and other things when i switch the PM3070 off. When i switch the pm3070 on again the settings are restored. But since a few days the settings are not restored. Problem solved. The battery was in a unusual place. Outside on the back of the oscilloscope is a connector to remote control the oscilloscope. When this connector is not in use a block is plugged into it on the back. Its called a PM8998. Here you see it next to 4 connectors. http://home.wanadoo.nl/hihihi/pm3070/img_0034.html Inside this PM8998 is a battery. You have to disassemble the PM8998 to see the battery. I have replaced the 3 volt lithium battery. Now the settings are stored and restored again. It works :-) Thanks for trying to help :-) -- email hihihi wanadoo nl |
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