meter probe slipped on plate, poof !

[daz]

I was measuring plate v and the probe slipped making contact between plate and cathode. It arc'd and it was arcing (glowing white) even after i pulled the probe away and i quickly turned it off. When i turned it on the voltages measured right, tubes light normally, tone is normal. What damage should i look for? Please don't tell me the OT could be damaged because i just ordered one for my friends amp i built ! ok, tell me. But lemmie get a rope first so i'm ready for this.

[txstrat]

tubes light normally, tone is normal.

May I assume the amp works as intended?
I had this happen once or twice too and the arc between the plate and the heater was scaring me to death (I think it was more likely the heater in your amp too, since the heaters are next to the plates on the tube sockets - or the grids depending on which side you hit ).
As long as the amp sounds good I'd say everything turned out good.

[daz]

Yep, heater not cathode. I'm just so used to the cathode being close by, and since originally wired i never have to think about the heaters again. So my mind just just doesn't even see them. But in any case all seems fine and even the heater V is good. Thanks for pointing that out. I just spaced. (by one space )

[tubeswell]

It could be that the arc was through the air (and catalysed by the probe, so that it wouldn't arc again unless you connected the probe again), and therefore it could be that it didn't leave any carbonised material on any surface.

[daz]

No black carbon on the probe, but on both the heater and plate pin connections.

[tubeswell]

Check for DC resistance between the pins (with the amp off). You might have to scrape or file the carbon off (or at worst change the tube socket).

[daz]

I did, they're fine. No bridge there.