MASTECH MAS345 DMM problem about display

Thread Starter

BOLTZ

Joined Nov 25, 2021
5
hi
Not understand why display my DMM not functions corect .
i need same indications for a fix my DMM.
In attach it is pictures about my problem .The first pictures value it is corect but ,I have to read from an angle.
When read a perpenticular value not corect
i wait your explications

tnx
Best regardes
Ioan
 

Attachments

dl324

Joined Mar 30, 2015
16,846
Welcome to AAC!

Was it like this when it was new? Or did it happen after the meter was abused?

Good: 1640276993607.png Bad: 1640277072728.png
 

MrChips

Joined Oct 2, 2009
30,714
You might be able to adjust the contrast on the LCD.

I don't know if R44 in this drawing will control the contrast.

MASTECH LCD8221.jpg
 

Thread Starter

BOLTZ

Joined Nov 25, 2021
5
hi and tnx for replay
dear ,,dl324,, my DMM it worked correctly but i ignore the signal ,,bip ,,bip,, when press ,,RH,,button .
It was a mistake.
do you think can be repaired or to the tash
i try adjust value ,,R 44,,tnx for advice dear ,, MrChips,,
Best regardes
IOAN
KN34BK-Qth locator
 
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