Products > Test Equipment
GW Instek LCR-821 LCR Meter Display Issue.......
Smokey:
I scored a GW Instek LCR-821 LCR Meter from the ebays...
Product page (discontinued) = https://www.gwinstek.com/en-US/products/detail/LCR-800
DataSheet = https://www.gwinstek.com/en-global/products/downloadSeriesDownNew/13514/766
Manual = https://www.gwinstek.com/en-US/products/downloadSeriesDownNew/13505/769
...It appears to be working except for a few lines on the LCD display that are out:
A quick teardown showed no obvious problems and reseating the display ribbon cables had no effect.
The display itself is a pretty big big module with a sticker and the following part numbers:
"13031101D129"
"LMBHAT014G18CS"
Searching the last number turns up what looks like the same thing from an aliexpress seller for $62
https://www.aliexpress.us/item/3256803247659429.html
So that's the story and the extent of the research I've done so far.
What do you think? What would cause just a few lines like that to go out? Any hope of fixing this one, or should I just try the aliexpress replacement and see what if anything shows up in the mail?
KungFuJosh:
The original LCD on the Hioki 3532-50 that I'm repairing also had a few lines missing, and a bad backlight. The easiest thing to do is to replace the LCD, assuming you get a good replacement.
If the seller's feedback is good enough, it's probably worth a shot for $62 as long as they accept returns if it doesn't work.
nctnico:
It is possible there are a few bad solder joints on the display module's board (the row driver chips) or that the conductive rubber contact strips between the board and the screen itself are no longer making contact. What you can try is to take the display module apart and clean de PCB and conductive rubbers with alcohol. Just make sure to have room on a clean desk to lay out all the parts of the display.
AFAIK this display module is pretty much self contained so any problem with the display module is most likely from the display module itself.
Smokey:
--- Quote from: nctnico on September 04, 2024, 11:12:10 pm ---... Just make sure to have room on a clean desk to lay out all the parts of the display....
--- End quote ---
...you ask a lot of this poor engineer.... :)
Smokey:
wow. that was fast... Bing search already indexed this thread.. so my bing search for "LMBHAT014G18CS" points me back here as the top result...
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