Neighbor of mine gave me this one to take a look at. It used to work then shut down by itself, and lately wouldn't light the display at all, or light up briefly, display colored lines and patterns and shut back down.
Found two bloated 25v 470uF Capxons on the 12v rail. Replaced, no more funky patterns, nice clean "No Signal" display but shuts down 2 seconds later, way before the LED turns amber to indicate standby state.
The inverter area is fairly toasty also, this thing seems to have run with the bad caps for a while and drawn excess current. I think the FETs or the transformer could be gone. I'm 90% sure the lamps are good, but i'll test them tomorrow before starting to snoop around the inverter.
Found two bloated 25v 470uF Capxons on the 12v rail. Replaced, no more funky patterns, nice clean "No Signal" display but shuts down 2 seconds later, way before the LED turns amber to indicate standby state.
The inverter area is fairly toasty also, this thing seems to have run with the bad caps for a while and drawn excess current. I think the FETs or the transformer could be gone. I'm 90% sure the lamps are good, but i'll test them tomorrow before starting to snoop around the inverter.
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