Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Was working, now trying to burn up!
#10

Oh, don't get me wrong. It WAS working fine until today when I tried checking voltage on a pair of wires. That was probably just a weird coincidence, however. I had nothing crossed and I didn't tamper with anything except connecting an un-powered (no battery needed) analog multimeter to a pair of wires that may have been badly wired up by someone who had it before. That shouldn't have caused a mess of trouble since the multimeter didn't get fried, and it was on the setting for AC voltage metering.

And trust me, I'm not trying to burn it up. Icon_lol It hasn't even been plugged in since the second test with the 41's removed and the 7Y4 in, when I found it was overheating on that second check. I'm gonna try to get the suspect tubes (7Y4, both 41's) checked out and replaced if needed before it gets plugged in again.

Frankly, I think the 7Y4 rectifier tube just decided to bite the dust at the same time as I was checking those wires for voltage. After all, it may be a 73 year old tube! The 7Y4 one is Philco branded. One of the 41's is a Westinghouse and the other is Sylvania. The only other Philco tube still in it besides the 7Y4 is the 7C6.

Although, I know less than nothing about vacuum tubes right now. Icon_wtf


Messages In This Thread
Was working, now trying to burn up! - by BenWA - 09-12-2014, 08:43 PM
RE: Was working, now trying to burn up! - by BenWA - 09-12-2014, 11:59 PM
RE: Was working, now trying to burn up! - by sam - 09-13-2014, 09:04 AM
RE: Was working, now trying to burn up! - by sam - 09-13-2014, 07:25 PM
RE: Was working, now trying to burn up! - by sam - 09-13-2014, 10:55 PM
RE: Was working, now trying to burn up! - by sam - 09-13-2014, 11:27 PM



Users browsing this thread: 7 Guest(s)
[-]
Recent Posts
6TPZ and 5TPO Radio Help
Quick progress report: X7 is broken. Only one leg soldered, the other missing and the diode is cracked. I've replaced...R3Sons — 05:05 PM
6TPZ and 5TPO Radio Help
Oh...and you have electrolytic caps there. All need to go and be replaced.morzh — 04:36 PM
6TPZ and 5TPO Radio Help
Thanks, will do.R3Sons — 01:25 PM
1930s Stewart-Warner Tombstone Radio need help identifying model number
UPDATE: I was able to pick up a signal generator on the cheap (amazingly enough) on feebay and I did an IF alignment fol...captainclock1988 — 09:53 AM
Philco 91 Schematic
Hi Rod, The resistor connects to pin 4 and the ungrounded side of block 9. From pin 9 of the RF tube to one side of ...dconant — 09:34 AM
Just got a 49-1613 need to know...everything!
I just found your post. I have this exact same model, and have had it since 1985 when I was 15 years old! I performed a ...MuzzcoVW — 09:11 AM
B&K 1077B no video
Hello Tim, I would if it's a leaky Capacitor So are all 3 of those B- voltages low then ? Sincerely Richardradiorich — 01:55 AM
B&K 1077B no video
I found a schematic and think I have the problem traced down to the minus power supply. I have very low voltages that go...TV MAN — 12:41 AM
RCA 15X
I'd try replacing the bulb first and if that doesn't do it, then change the 35Z5 and see if the problem goes away.NostalgiaRadioTime — 12:28 AM
B&K 1077B no video
Hello Tim, I have that exact unit in my shop too plus a Sencore unit there are times I like one or other !!. Sincerely...radiorich — 11:07 PM

[-]
Who's Online
There are currently 9855 online users. [Complete List]
» 2 Member(s) | 9853 Guest(s)
AvatarAvatar

>