I have a UNI-T bench multimeter (UT804) purchased 2 years ago on eBay that has developed an annoying random 'flashing' display back-light. I have been in contact with UNI-T and they suggest returning it to their factory in China as they have no authorised UNI-T service agent in Australia.
Minimum cost is postage both ways plus USD$100.
I would have a go at repairs myself but cannot locate a schematic for it.
Any suggestions?
JD
**Is the backlighting an EL (Electroluminescent) panel?
If so, you're pretty much screwed. It will either be the panel, or the high Voltage inverter. The inverter is easy enough to trouble-shoot, but the panel, if faulty, is a whole 'nuther can of worms. The other option is that the backlighting may be LED. If that's the case, you should be able to figure it out.
-- Trevor Wilson www.rageaudio.com.au
Hi Trevor,
Thanks for your reply. Display is very light blue and is edge-lit on left hand side edge only, so I suspect is LED?
In between flashes of the screen the display looks like a stock standard LED display - black lettering on a grey background.
It is a long shot but I will contact UNI-T again and see if they will send me a schematic.
Problem in the past when contacting them is that they wont give me an email address for a techo in their company. Stock answer - if it's faulty send it back. Most annoying!
JD
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