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Last night I noticed something interesting when scanning the schematics, getting ready to doze off... A lot of the resistors are marked with M rather than k suffixes. Now I'm darned sure there are not handfuls of 47 Meg and 470 Meg resistors (I can read the colour bands).
Do many other schematics call out values this way?
Oh and aside from the rubber wire, the RF deck is full of paper caps in horrendous locations. I suppose I'll untangle them all and desolder properly, but it is no surprise that many repair men clipped and resoldered to the leads of the old component...
I don't hold with furniture that talks.
Messages In This Thread
RE: Zenith 12H090 - by EdHolland - 12-05-2018, 03:00 PM
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Recent Posts
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Philco 42-345 Restoration/Repair
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| Hi OSanders,
Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM |
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| I think that RCA and GE introduced metal tubes in the USA in 1936. I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM |
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Philco 42-345 Restoration/Repair
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| Vlad95,
Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM |
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| A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM |
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| Thanks Rod,
"When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM |
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| RodB
:beerchug:Vlad95 — 10:22 AM |
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| Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM |
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5U4 vs 5Z4 tubes
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| Well this is a Hallicrafters SX/9 circa 1936.
No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM |
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5U4 vs 5Z4 tubes
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| The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM |
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Philco 42-345 Restoration/Repair
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| By the way.
osanders0311
Take a look here: Dial cord stringing Guides
May be here you can fount correct string settin...Vlad95 — 11:15 PM |
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