I dug deep inside to change the triac and the fluorescent driver chip but after reassembly bulb won't light up
rechecked all umbilicals detached reattached appropriately, rechecked all cherry switches interlocks, there are no quick connects for wirings they're hard soldered
there's no schematic
the original problem was the triac 10N120BN not the UBA2120P driver because now the propulsion and fresh air scent functions
but before the repair lamp did energize but now for some reason it won't light up
so confusion exists because there are two independent grounds (earths) unconnected, one earth is for powering controller stuff with lamp too, but the other isolated earth is for the ionizing hv and propulsion scheme
these two grounds are marked clearly as "GND" on the boards and I believe resoldering wiring umbilicals back to their "GND" landings is likely where i suspect a screwup
but I don't know which earth is assigned to those two planes unconnected to each other yet labeled identically as "GND"
any resolves? the alternative is to scavenge another to inspect wiring terminations to which of the two separated earth planes
rechecked all umbilicals detached reattached appropriately, rechecked all cherry switches interlocks, there are no quick connects for wirings they're hard soldered
there's no schematic
the original problem was the triac 10N120BN not the UBA2120P driver because now the propulsion and fresh air scent functions
but before the repair lamp did energize but now for some reason it won't light up
so confusion exists because there are two independent grounds (earths) unconnected, one earth is for powering controller stuff with lamp too, but the other isolated earth is for the ionizing hv and propulsion scheme
these two grounds are marked clearly as "GND" on the boards and I believe resoldering wiring umbilicals back to their "GND" landings is likely where i suspect a screwup
but I don't know which earth is assigned to those two planes unconnected to each other yet labeled identically as "GND"
any resolves? the alternative is to scavenge another to inspect wiring terminations to which of the two separated earth planes
It probably won't work as a 10N120BN or HGTG10N120BN is not a triac, it is a high voltage medium current N channel IGBT.
https://www.fairchildsemi.com/datasheets/HG/HGT1S10N120BNS.pdf
https://www.fairchildsemi.com/datasheets/HG/HGT1S10N120BNS.pdf
triac editorial
No, triac editorial error, sorry about that, but the exact replcmnt works because propulsion and ion engages but lamp won't, dunno why yet, maybe the sensitive ic controller that appears as a rom chip
No, triac editorial error, sorry about that, but the exact replcmnt works because propulsion and ion engages but lamp won't, dunno why yet, maybe the sensitive ic controller that appears as a rom chip
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