Proud new owner of a Philco 48-1290 - Printable Version
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Proud new owner of a Philco 48-1290 - bmeehan1970 - 01-08-2024
Hi guys I just bought a Philco 48-1290 yesterday. How much will it cost me to restore the electronics? I'm asking because I have no idea.
RE: Proud new owner of a Philco 48-1290 - Radioroslyn - 01-09-2024
Sorry I don't understand the question. Does "me" mean if you do the work how much would the common replaced parts cost? Or How much would it cost to pay someone else to fix it for me?
It's a good question in that this set has some odd tubes in it that if they are weak or just bad may present a problem to find like the FM1000. Some of the other loctals I've never heard of.
Around that time 1947-48 Philco was working on a way to demodulate FM that didn't require using anyone else's detector circuit. Philco hated paying royalties to RCA and others for the use of circuits. That's why you'll never see an eye tube (RCA circa 1935) on a Philco till maybe the mid/late '50s, they had the shadow meter. So the engineers came up with the circuit using this multigrid tube, the FM1000. Sylvania was making the tubes for Philco so they designed the tube for this purpose. There is no substitute for it and they're kinda mysterious in that there isn't much printed data (spec's) about it. Pretty much the pinout and heater current/voltage.
I'm lisdexsic and don't read things the same as others.
https://philcoradio.com/library/download/service%20info/yearbooks/1948-1949/split/Part47-Philco%20Home%20Radio%20Yearbook%201948-1949.pdf
RE: Proud new owner of a Philco 48-1290 - morzh - 01-09-2024
FM1000 might just turn out to be good.
Mine did.
Thus said, those 1948 models with the vertical chassis put inside at an angle, with 2" or so wide access to bolts - I did it, just cuz I didn't know better when I bought it. Won't happen for the second time.
Alignment is a female dog too.
I made a photocopy of the dial and used it instead of the real one.