I see blank LCD
Blank LCD on these models going out are usually due to the PCB connection.
I found units I've seen have broken traces or the pins mounted on the PCB have lost their connection to the traces...
this is the ribbon cable from the display to the main UPS PCB...
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/lisa_52daba487e5b4d53
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