Tim, Yes, the resistance should be between 2500 & 3000 ohms. As you say a short on Q7 itself should be obvious, so if nothing looks bad, then after having a look at the schematic a good place to look may be around T4. There is a ground connection to winding 3-4, so a short around here to winding 5-6 would put a ground onto the base of Q7.
Good hunting 73 Don, M1DIC K2/100 #3082 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: 30 January 2005 18:56 To: [email protected] Subject: [Elecraft] Q7 base resistance test - low reading Hi folks - I just completed the RF board and am doing the resistance checks on page 71. For Q7 base it requires 2.5 - 3.0 k. My DVM onky meausres .4 ohms - no where near 2300 - 3000 ohms. I assume this means I have a short. There is no short between the soldered pads on Q7 and I rechecked the mounting screw hardware to make sure each part was correctly in place. All other measurements for the RF board are OK. Not being anything but a paint-by-number solderer, am I reading the table correctly? That does mean 2500 - 3000 ohms write? If so, I very stumped because a short on this component should be very obvious - but I don't see it. Can someone offer some help please? Thank you very much in advance. 73/Tim NZ7C _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
