03-09-2012, 05:08 PM
I need of help!
What I have is a Stromberg Carlson 1120PL Have tested the tubes and there good so I replaced the electrolytic's and all the wax paper caps. I did not touch the molded mmf caps or any resistors. Powered it up and no smoke :.-)
Now my problems
1) I get some stations but their week
2) This part puzzles me I get the same stations in two locations on the dial
3) I get a hum through the speaker which is constant (I was very careful to replace with the same value's on the E-caps should I go higher?)
When checking the voltages per Riders 15-1 they all are with in 1-10 volts of the published values and the heaters are all 6.3-6.5vac when taking the voltages like on 6sk7 pin 8 I get loud (good volume) crackling until the probe is firmly attached should I look for a bad resistor?
Some of the other readings that are questionable
6SA7 pin 5 calls for 7.5 I get -7.2
6SF7 pin 2 .6 I get -.44
Eric
What I have is a Stromberg Carlson 1120PL Have tested the tubes and there good so I replaced the electrolytic's and all the wax paper caps. I did not touch the molded mmf caps or any resistors. Powered it up and no smoke :.-)
Now my problems
1) I get some stations but their week
2) This part puzzles me I get the same stations in two locations on the dial
3) I get a hum through the speaker which is constant (I was very careful to replace with the same value's on the E-caps should I go higher?)
When checking the voltages per Riders 15-1 they all are with in 1-10 volts of the published values and the heaters are all 6.3-6.5vac when taking the voltages like on 6sk7 pin 8 I get loud (good volume) crackling until the probe is firmly attached should I look for a bad resistor?
Some of the other readings that are questionable
6SA7 pin 5 calls for 7.5 I get -7.2
6SF7 pin 2 .6 I get -.44
Eric
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