MK-168 Transistor Tester, weird characters

[Flump]

Version 1.11K

I had one of these earlier last year (might have been an earlier Version)
but gave it to my mate because he liked it so much.

Well I bought another and it arrived today but when measuring 78* Regulators and some Diodes
I get weird characters on the screen like on the picture below, I don't remember my old one doing this
can anyone confirm if theirs do the same or if mine is faulty
or maybe the older ones didn't try to measure Regulators

[HKJ]

I did a review of on some time ago and there one of the diode symbols looked that way.
http://lygte-info.dk/review/ComponentTester%20MK-168%20UK.html

[Flump]

Hi HKJ

Great review and nice detailed pictures 

looking at the links you posted at the bottom took me here
http://www.mikrocontroller.net/svnbrowser/transistortester/Software/Markus/
and it looks like we might be able to upgrade the firmware on these ?

I wonder what version the one you did the review on was ?

[radioFlash]

This device is the topic of one of the ongoing thread "$20 LCR ESR Transistor checker project". I ran into a similar glitch that the software developer fixed. The issue is that some LCD controllers require some wait time before updating, otherwise characters got corrupted. Here's a link to some messages discussing it:

https://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/msg482353/#msg482353