01-24-2019, 03:35 PM
That's transistors for you. Finicky, finicky. Pernickety even.
Also, see if there are pools of rosin flux between traces, dirt, green stuff etc.
This could be sensitive and those things could throw the balance off.
Is the board dry? I mean, not surface but the laminate itself. It is probably the brown phenolic paper laminate, it could potentially absorb moisture if kept in such place. Baking at low temps as the last resort.
Check the outputs of the transistor against the datasheet, if different from the original.
It gotta be something simple.
Also, see if there are pools of rosin flux between traces, dirt, green stuff etc.
This could be sensitive and those things could throw the balance off.
Is the board dry? I mean, not surface but the laminate itself. It is probably the brown phenolic paper laminate, it could potentially absorb moisture if kept in such place. Baking at low temps as the last resort.
Check the outputs of the transistor against the datasheet, if different from the original.
It gotta be something simple.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
