The Fisher 440-T FM Receiver
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Threads: 562
Joined: Oct 2011
City: Jackson
State, Province, Country: NJ
Good thing about an LED when the hookup is correct, all it does when reversed is simply not lighting up, but it won't go "poof". Then you simply reverse it and it works.
The current is too small to cause damage even if the reverse voltage is enough to cause the breakdown.
Messages In This Thread
RE: The Fisher 440-T FM Receiver - by morzh - 03-13-2014, 10:21 AM
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Recent Posts
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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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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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