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This board is from a Rhyne UC7067RYE remote receiver for a ceiling fan/light fixture.

Rhyne UC7067RYE board

I blew the transistor “Q6” (that’s the piece that broke off in pic 3).

Damaged transistor

Broken piece with markings

The fan circuit still works fine but the light circuit does not (manual).

The only markings I could identify were the ones shown in pic 3: VF08SB RH03.

I know that the package is a TO-126. The numbers do not follow any transistor marking code standards that I know of (JEDEC/JIS/Pro Electron).

My google searched have not turned up anything that looks promising. I suspect this is a custom number from the OEM and I am not optimistic I will figure out exactly what it is but I was hoping someone might have some tricks for discovering what type of transistor it is so I can at replace it with something similar at least.

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    \$\begingroup\$ Most probably a TRIAC. \$\endgroup\$
    – winny
    Sep 14, 2020 at 16:34
  • \$\begingroup\$ @winny I suspected that too (seems like it just passes 120 VAC to the light pcb) but I didn’t want to influence anyone’s instincts. What made you think that? if you don’t mind me asking. \$\endgroup\$
    – Beaug45
    Sep 14, 2020 at 16:45
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    \$\begingroup\$ The fact it's in a fan/light AC circuit (and no other larger power devices are visible) hints that it's probably the TRIAC. The circuit's simple enough that it could be reverse-engineered to determine the correct pin-out of Q6 and it's function. Chances are good of finding a suitable generic replacement in TO-126. \$\endgroup\$
    – rdtsc
    Sep 14, 2020 at 17:13
  • \$\begingroup\$ Probably something like a 2N6075 sensitive-gate 4A triac would work, but trace the circuit out to make sure that makes sense and see what might have killed it (perhaps a failed MOV) \$\endgroup\$ Sep 14, 2020 at 18:07
  • \$\begingroup\$ What @rdtsc said, and probably 8A 300 V rating given the name. \$\endgroup\$
    – winny
    Sep 14, 2020 at 18:08

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