Agree with Bob. The fact that the top is blown off sounds like a bit of lightning. You can easily adapt a classic npn or pnp in for a temporary test. 3904 or 3906. I have needed to do this on other things. It confirms quickly thats the issue and then you just need the new smt to solder in. I fear you nightmare may just beginning. Good luck. Regards Paul WB8TSL
On Tue, Aug 11, 2015 at 6:47 AM, Bob Camp <[email protected]> wrote: > Hi > > It’s a pretty good bet that what ever is *really* is a generic PNP or NPN > device will drop in. You need a low frequency device like the 3904 series. > It’s going to carry about 40 ma to your antenna. A high(er) current part > (Ic max > 100 ma) is > better than a low(er) current (Ic max < 20 ma) part in this case. > > Bob > > > On Aug 10, 2015, at 9:12 PM, Chris Waldrup <[email protected]> wrote: > > > > Hi Everyone, > > > > > > Thanks for the suggestions this past weekend for helping get my new > Thunderbolt fixed. I got back into town last night late so couldn't tackle > it until tonight. > > I put a DMM on the F connector and I didn't have 5V on it. Opening up > the case, I found the top blown off one of the SOT package transistors. > It's the one closest to U19 and is connected to this chip's pin 14. > > I have the Thunderbolt with the three separate input voltages (5, > -12,12). Does someone have a board they can look at and let me know the > code on the transistor so I can see about a replacement? > > Maybe even a closeup shot of the 5 SOT packaged devices in that area as > I may find another is bad. > > Thank you in advance. > > > > > > Chris > > KD4PBJ > > > > — > > Sent from Mailbox > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
