Switch Lite - no display

So, there’s this switch lite I bought locally. it doesn’t turn on. power button unresponsive. daughterboard/display work fine with an alternate motherboard, however.

When plugged in to power, it’ll draw 0 amps without the battery plugged in. with the battery plugged in, it’ll initially draw 0.435 amps, and then switch to 0.6xx amps indicating it’s likely booted.

No display, not even with a flashlight.

Nothing around any of the ICs seem to be shorted

FFC connector to the daughterboard visually and in diode mode seems to be intact

Any ideas folks?

Cheers