Do you have the schematic for the T-4XC? If so you can trace through the keying circuit to see if the relay is getting the proper voltage to pull it in. Also you can measure its resistance to see if it is open first before you start doing some circuit troubleshooting.
Jim ----- Original Message ----- From: J G To: [email protected] Sent: Thursday, March 19, 2009 4:00 PM Subject: [Drakelist] T-4XC relay won't go to transmit Hello everyone, I just got a C line to add to my B line. Love this stuff. The problem: The relay in the T-4XC will not switch to transmit. Background: The T-4XC was working when I got it, althought the switches needed to be cleaned; I could tell by the meter bouncing around and by noise made in the receiver when switching. I cleaned the switches and checked the tubes while I was at it. I put it back in line and things were fine for a while. Then, without smoke, sparks, or any other fanfare, the relay stopped doing its job. This was shortly after I plugged in a mic. To eliminate any possible suspicion of the power supply, I tried the AC-4 from the B line. No chnage (still not working). If it makes any difference, the serial number is 21,000+ (forgot the last 3 digits). Question: Would the relay just up and fail like that? I looked through the archives and note that relays do need replacing at times. But, before I order one (and thank for having the Mouser number there in a 1/2007 post), could the cause be elsewhere? Thanks, Jim ------------------------------------------------------------------------------ _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
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