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zenith tuner module 175-5073-01 compatability
Hey All, i bought a NOS zenith tuner module 175-5073-01 off of fleabay, i'm hoping it will sub to a zenith chassis 23lc45z1 set that i own, which uses a 175-5074 which is in it, can anyone confirm or deny it as a replacement? i can do modifications if necessary. thanks Mike
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#2
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Might be more of a mechanical difference rather than electrical. What's wrong with the old tuner? Can you post pics?
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#3
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Only way to tell is look it up in the parts catologue. If
its physically the same it may work BUT your set uses 24V low B+ and the same year S-3 uses 12V. Other difference is S-3 RAT tuners covered some CATV freqs. If its one of the big dual tuners with 2 plugs on the side resolder under the plugs & look for cold joints around the shielding. BTW drop a note to drh4683 he may have a parts catologue. 73 Zeno LFOD ! |
#4
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Quote:
The tuner looks almost identical to the original unit. Chassis is 23lc45z1 if anyone has a memory for this set. Mike |
#5
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Audiokarma |
#6
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Ive been looking for a parts cat for years. Trouble is
they pretty much switched to fiche in the 80's I think we have some name confusion here. What you have is a selector. The tuner is separate & mounted on the chassis. Most selectors were built on ceramic & had printed parts & even switch contacts. They usually didnt clean well so they got changed. Price was only about $25 exchange. One easy thing to try if you havent is tuning the adjacent channel. they overlap so you may get lucky. The tuner tip still holds. Those PC cons were notorious for drift & other intermittents. Differences in numbers can be as simple as lead length or cosmetics. A selector is nothing more than a 16 position voltage divider that divides down 32 V for a tuning voltage. Add a switch for channel, & band switching & an AFC switch. No active parts IIRC. 73 Zeno LFOD ! |
#7
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Quote:
Last edited by mr_fixer; 06-19-2018 at 05:19 PM. |
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