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Problem with Scope Hameg HM-605

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bricoweekends

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hameg hm 605

Hi,

when the oscilloscope is working for more than 30 minutes then it happens pretty often that all the signal is displayed at the left edge of the screen, for example, instead of viewing a nice sine signal, I see a vertical line at the left. What may be the problem?

Thank you very much
 

hameg hm605

Do you see the signal at very left of the screen? if yes, there might be a problem of horizontal scanning problem.
 

hm 605

yes, I see the signal at the very left of the screen, just in one vertical line. I have the schematics of the oscilloscope because this model included them into user manual, but I am not sure where I have to have a look.

May be if this is a frecuent problem, someone may give me some tip.

Thank you !
 

hm605

Since the problem occurs after a certain period, you're probably looking at a faulty IC or a bad solder joint/connection somewhere in the timebase section. Although I do work for a Hameg dealer, I don't have a circuit diagram to hand to be more specific, I'm sorry.
 

hameg hm605 oscilloscope hameg hm605

I will try to get a second scope to check the time base, I know that the scope has a output at the rear for the time base signal.

Thank you!
 

hameg hm605 circuit diagram

Carefull... there's some pretty high DC voltages floating around the CRT if you're going to be measuring inside one of those while it's in operation.
 

Re: hm 605

bricoweekends said:
yes, I see the signal at the very left of the screen, just in one vertical line. I have the schematics of the oscilloscope because this model included them into user manual, but I am not sure where I have to have a look.

May be if this is a frecuent problem, someone may give me some tip.

Thank you !
Click to expand...
Hi,
is it possible to send me the circuit diagrams by email or PM me?

Thanking in advance
 

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