Martin thank you for posting photos and text. So war die Reparatur bald abgeschlossen und die Kalibration konnte angegangen werden. Heute sind Plattformen wie z. Das HM ist ein 2-Kanal Oszi mit einer max. Relatively puristic developed, and without much "schnick schnack" they were also at that time already affordable for private people.
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Welcome, Guest. Please login or register. Did you miss your activation email? This topic This board Entire forum Google Bing. Print Search. Hey guys The other day i went to the old stuff market and saw this oscilloscope for 20 euros and the guy said it worked and i took the gamble and bought it.
When i got home i hooked it up and it worked indeed, so i played with it for a couple of days to see if anything is wrong with it but guess it was working just fine. So i opened it up to check if anything burned by the looks i found nothing, next thing i planed to re-solder the things around the CRT then ill check voltages coming out of the transformer.
My first guess would be that you lost the acceleration voltage for the CRT. The manual says that this is Vdc. If you don't have a suitable probe and meter to check this SAFELY, then you're better off having someone else look at it.
It can be VERY dangerous if you don't have the right high voltage equipment. If you have the right equipment, then I'd start with checking the operating voltage listed on page 32 of the manual. Guess that fixing it is beyond my possibilities. Well i guess ill check parts along the line of that Vdc maybe i get lucky until i gather money for repairs. There was an error while thanking. SMF 2.
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Product: HAMEG HM412-3 HAM-QHM412-3
HAMEG Oszilloskop hm 412 Oscilloscope