Hi-Fi tube amp kit from China
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City: Annapolis, IL
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I may try that. The 6SN7 heaters are run from a separate filament winding than the 6L6s. The China tubes really buzzed, but I subbed a couple I had on hand and it quieted a lot. Still trying to track the hum down. I may even have to set up the heaters on these as filtered DC. I have a dc power supply I may try to see if it helps. It really isn't bad, but with the filtering on this amp, I feel it shouldn't have any hum at all. Going to do some more checking.
If I could find the place called "Somewhere", I could find "Anything" 
Tim
Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44
Messages In This Thread
RE: Hi-Fi tube amp kit from China - by TV MAN - 01-20-2017, 06:03 PM
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B&K 1077B no video
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| 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 |
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B&K 1077B no video
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| 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 |
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RCA 15X
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| 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 |
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B&K 1077B no video
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| 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 |
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RCA 15X
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| Everthing goes at once, maybe it's the cold weather, I have had 2 dial strings break and no my little RCA is having dial...Paul Philco322 — 10:26 PM |
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Philco 91 Schematic
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| Hi Dan,
I can't explain this specific resistor but I have seen the use of a switch to apply B+ voltage to screen gri...RodB — 09:36 PM |
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6TPZ and 5TPO Radio Help
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| I suspect it's been repaired before.
And I suspect whoever repaired it, wanted to re-use old transistors' pin stubs in o...morzh — 09:24 PM |
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B&K 1077B no video
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| Thanks Rich! I'll take a look and see what he has. I know there's more modern equipment to be had, but this one I know a...TV MAN — 09:11 PM |
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B&K 1077B no video
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| Hello Tim,
Here is a link to restoration of one on Phil's old radios site !
Sincerely Richard
bk1077bradiorich — 09:01 PM |
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6TPZ and 5TPO Radio Help
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| I'm a little befuddled on this one. Should X5 and X4 be tied together like this? It looks like someone added this at so...R3Sons — 07:33 PM |
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