On Aug 20, 12:01 am, Andy Cuffe wrote:
The inverters are more complicated to fix. Any number of things can
go wrong. I see bad transformers, shorted transistors, shorted
diodes, and bad caps. No schematics are available and the SMD
components are often not marked in any meaningful way. I have
repaired a lot of them, but it often requires doing a lot of research
to ID parts.

Along those lines, I have a Sampo QPWBGL993IDLD inverter with a bad
transistor (Q8, one of two that drive the transformer windings). It's
an
SC-62/MPT3 package, with 'CF', 'Å', and 'RT' markings. After much
online research, I identified two possible devices that this could be:

Sanyo 2SC3650 NPN, 25V, 1.2A (hFE = 1500 typ)
http://www.ortodoxism.ro/datasheets/..._e/2SC3650.pdf
or
Rohm 2SD2150 NPN, 20V, 3A (hFE = 180-390)
http://datasheets.ru/datasheets/1078...a-2SD2150.html

Which one is it (or is it some other transistor)?

Thanks,
TM