Article View: sci.electronics
Article #16396Re: TV tuner help wanted
From: Barry Fowler
Date: Tue, 05 Jan 1993 21:12
Date: Tue, 05 Jan 1993 21:12
18 lines
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1086 bytes
Yes. try Howard Sams Schematics 1-800-428-7267. As for what's wrong with the set, if the raster is just plain blank on VHF only, it's probably the oscillator (transistor) as there is a common RF amp. transistor used for both UHF and VHF. One other remote possibility is the "B+ voltage" provided to the VHF tuner but in about 12 years of repairing TVs, I've seldom seen a fault in this circuit. When working on VHF tuners, do not move any parts or bend any leads or it will detune the tuner, perhaps out of the range of its fine tuning. Keep all leads on replaced components SHORT as you're working in a very sensitive high frequency circuit. Have fun, barry
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From: barryf@hpfcso.FC.HP.COM (Barry Fowler) Date: Tue, 5 Jan 1993 21:12:39 GMT Subject: Re: TV tuner help wanted Message-ID: <7480161@hpfcso.FC.HP.COM> Organization: HP Colorado Computer Mfg. Operation Path: arc1-ca.pugleaf.net!sparky!uunet!cs.utexas.edu!zaphod.mps.ohio-state.edu!sdd.hp.com!hpscit.sc.hp.com!hplextra!hpfcso!barryf Newsgroups: sci.electronics References: <20580@ucdavis.ucdavis.edu> Lines: 19