Hello everyone, My oscilloscope has gone wrong. Was going fine then it suddenly went out of focus for no reason. The focus knob hardly has an effect, its majorly out of focus
any ideas ?
many thanks!
- posted
19 years ago
oscilloscope problems
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- posted
19 years ago
The model is:
Iwatsu SS 7636 350 MHz 4 channel
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- posted
19 years ago
yeah, the focus or high voltage supply is crapped out.
leaky caps in the HV supply can cause this problem in a large variety if scopes. of course this depends on the type scope you have.
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- posted
19 years ago
"Barry Hobbs" wrote in news:18_Zd.2242$ snipped-for-privacy@newsfe3-gui.ntli.net:
It certainly would help if you mentioned what make and model scope you have.
If it were a 2213/2215,I'd say to look at the focus string of resistors,one or more is out of spec.
-- Jim Yanik jyanik at kua.net
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- posted
19 years ago
Depends on what kind off focus supply you got, some days ago I was into a Philips scope and the reason for poor focus was that the lower resistor in the divider had gone up in value. As Jamie said leaky caps in the HV supply can give you same trouble but if it suddenly goes bad check for bad solder joints. Follow the shaft from the front panel to the rear of your scope and check it out :) If you got proper instrumentation and knowledge you will probably solve this.
Bjorn
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- posted
19 years ago
The model is:
Iwatsu SS 7636 350 MHz 4 channel thanks