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Electronics => Repair => Topic started by: ivi_yak on April 29, 2020, 11:50:19 pm

Title: wavetek 23xt slow voltage rising on dc range
Post by: ivi_yak on April 29, 2020, 11:50:19 pm

Hi,
I have a problem with Wavetek 23xt,
when I measure voltage on DC range its start slowly rising to voltage in circuit also when I short probes its start slowly discharge to zero from voltage I have get.
Could anyone have the same one bug what it could be? :-// :-DMM

Title: Re: wavetek 23xt slow voltage rising on dc range
Post by: dacman on April 30, 2020, 09:50:23 pm

Clean the function switch contacts and use a contact lubricant.

Title: Re: wavetek 23xt slow voltage rising on dc range
Post by: ivi_yak on April 30, 2020, 10:00:23 pm

Do you mean function selector wheel? thx for reply

Title: Re: wavetek 23xt slow voltage rising on dc range
Post by: dacman on May 01, 2020, 11:02:12 pm

Yes.  Clean the contacts that are controlled by the knob used to select the different functions and ranges.

Title: Re: wavetek 23xt slow voltage rising on dc range
Post by: jackthomson43 on May 02, 2020, 07:16:47 am

You should clean your electronic devices regularly. I think you should open it up and do a little dusting. https://www.theengineeringprojects.com/2019/09/schottky-diode-schottky-barrier-working-application-characteristics.html (https://www.theengineeringprojects.com/2019/09/schottky-diode-schottky-barrier-working-application-characteristics.html)

Title: Re: wavetek 23xt slow voltage rising on dc range
Post by: ivi_yak on May 10, 2020, 03:10:51 pm

Fixed!
I found two sprinned balls which maintain switch-wheel have lost their positions and the contact pressure was not enough to hold functionality.
Reinstall them with vaseline and back to life  :-DMM

thanks all for reply