By continuing to use the forum you conform your acceptance of these. If you are not happy to accept these you must stop using the forum and delete our cookies from your browser. User Name Remember Me? A few notes on experiences with the Hameg Scope. At 40 mins into the video, the shaft in the plastic boss at the rear of the pot can be seen slipping around.

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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. At first everything worked fine, all the adjustment buttons worked. I may have an idea that it could come from the probe, so I ordered two new probes, because the one I was using until now is the original one so it's a little old. And I will dust off the inside of the oscilloscope, and put KF F2 for the contacts bomb to clean the electrical contacts. Because I think there's a good chance it's from fake contacts.

Thank you for your help. NZ Siglent Distributor. Welcome to the forum. Did the problem appear suddenly on both channels at the same time? The service manual is around the WWW, once you have got hold of it check what supply voltages feed the input amplifiers. Check that they are getting to the amplifiers on your scope. Spraying is only useful if you excersise them straight away.

I'm sure, because if I turn the knob in full clockwise the tension high condition go down. Yes, the problem is appeared suddenly on both channels at the time. Lot of people said to me : "Be carefull with the oscilloscope because there are really big tensions". I'm a beginner in electronic I just know I shouldn't touch the backside of the Cathode Ray Tube and the alimentation.

But on the card with amplifiers, potentiometers, that is dangerous? Thank you for your answers. No, if both channels got the fault simultaneously don't bother spraying the coupling switches too much. Try in X-Y mode, if you're able to get sufficient deviation on the X scale that means the input section of at least one channel is good and that you have a problem somewhere between input amp and CRT "Y" plates.

If you get no deviation on X axis in X-Y mode look at input amp supplies to start somewhere. Peak voltage in your oscilloscope is 2kV but consider anything above 50V dangerous. Other voltages above 50V are present on X and Y output amplifiers.

Ok thank you, I decide to find a service to repair my HM So the cause of the problem was the probe! Thank you all for the answers. Quote from: Gwendam. They work easy and well. I'll keep them, I think. There was an error while thanking. SMF 2. EEVblog on Youtube.


HAMEG Oszilloskop hm 203-7 20 MHz



Oszilloskop HM203-7


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