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Old 21st Oct 2020, 11:24 am   #1
lucavic
Diode
 
Join Date: Oct 2020
Location: Modena, Italy.
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Default Nordmende WM3335 Sweep Generator.

Hi dear All,
let me introduce myself I'm luca from Italy,
so apologize for my poor english.
I have this sweep marker model
nordmende WM3335
but no sweep output and no marker spectrum.
Is ther anyone who can help me in repair it?

ps I have pdf service manual with schematics but 13Mb too fat
to attach. I can send it thru email.

many thanks
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Old 22nd Oct 2020, 4:58 am   #2
Diabolical Artificer
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Location: Sleaford, Lincs. UK.
Posts: 5,810
Default Re: Nordmende WM3335 Sweep Generator.

Hi Luca, welcome to the forum. As with any bit of gear start with a thorough visual examination looking for loose wires, burnt/exploded components and bulging electrolytic capacitors,then its a matter of checking the power supply and other voltages.

When I need help with a problem, I ask my question and attach screenshots of relevant sections of a device, like the power supply and in your case a block diagram and sweep OP section. So,find the right page/schematic, screenshot, so you have a good quality image. Some decent pics of the device would help too.

Andy.
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Old 23rd Oct 2020, 5:31 pm   #3
lucavic
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Location: Modena, Italy.
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Default Re: Nordmende WM3335 Sweep Generator.

hi Andy,
I checked voltages outputs of power supply unit and are all ok.
horizontal signal for x axis of the oscillosco is ok to.
Low frequency oscillators 1MHz to 50Mhz are ok too.
But I can't check higher frequency oscillations with my 60MHz oscilloscope.
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