No. The transistor is not getting the rail voltage from the power supply.So just replace with new transistor?
No. The transistor is not getting the rail voltage from the power supply.So just replace with new transistor?
Check and adjust if possible. But with that missing rail voltage it won't adjust and probably read a erroneous voltage.Adjust bias ?
Solder joined with wire reinforcing. ie . jumper wire.New closer pic, can this simply be solder joined ?
NLA btwSo just replace with new transistor?
Not completely how to test a transistor for shorts but I set MM to resistance mode and got the readings as shown in the photoPhoto topside around TR763. TR763 needs to be checked for shorted junctions.C-E or other.
Its not shorted.. Its " open" as in bad..Not completely how to test a transistor for shorts but I set MM to resistance mode and got the readings as shown in the photo
I also set my Fluke 101 to diode mode and got NO reaction from E or C with negative on Base
Those " batwing" TO-220 transistors are NLA anywhere new. Ebay pieces is a crap shoot. May be legit ,may not.Ok so I will have to get a new one. I see one on Ebay but perhaps mouser will have one
However........ There are other options. ie TO- 220 and TO-3P options.Those " batwing" TO-220 transistors are NLA anywhere new. Ebay pieces is a crap shoot. May be legit ,may not.
Different " case style" output transistors.Requires a very slight mounting modification.Not sure what those are or where to find them
Not sure what those are or where to find them
Complementary pair.. Your replacing both the 2SD(bad) and the 2SB(?) for that channel.So what is the modification?
Am I replacing 1 transistor with 2 of them ?