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-   -   Nordmende WM3335 Sweep Generator. (https://www.vintage-radio.net/forum/showthread.php?t=172293)

lucavic 21st Oct 2020 12:24 pm

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

Diabolical Artificer 22nd Oct 2020 5:58 am

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.

lucavic 23rd Oct 2020 6:31 pm

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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