[time-nuts] HP 53131A display dim
cjaysharp at gmail.com
Mon Nov 9 03:06:37 EST 2015
This may sound silly but aside from the failing capacitors that cause
displays to dim, the emissions falling and other esoteric issues, in my
years repairing VCRs with VFDs I most often found a good clean of the glass
and bezel would improve the brightness a considerable amount.
On 9 Nov 2015 05:30, "Chuck Harris" <cfharris at erols.com> wrote:
> The biggest cause of failure with VFD's that I have seen
> is the filament voltage drops too low. Usually it is a bad
> capacitor in the supply, or a drifting resistor on the regulator.
> I have a VFD on an alarm clock made by GE back in 1980 that
> has been running 24/7 since it was bought, and is still way too
> bright. I make my wife prop something to block it so that it
> doesn't keep me awake.
> -Chuck Harris
> cdelect at juno.com wrote:
>> Anyone know about these displays?
>> If the display is getting dim do I need a new VFD module?
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