[TechAssist] Re: Zenith B25A02Z tuner problem
- From: "tvservice" <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 8 Oct 2004 16:04:52 -0500
Thanks Bob
Will post my fix next week
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
----- Original Message -----
From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, October 08, 2004 2:54 PM
Subject: [TechAssist] Re: Zenith B25A02Z tuner problem
> ---------------------------------------------------------------
> Text pasted from WinSTIPS 2.0
> http://www.ServiceSoftware.com
> ---------------------------------------------------------------
>
> ZENITH 175-2721
>
> Int Oper Of Low Band
>
> John Kincaid Sos Tv
>
> Solder Bad In 175-2721 Pins From Pc And Choke In Left Lower Corner
Opposite
> Rf Nipple Left Lower 3/8 Inch Up From Bottom
>
> ---------------------------------------------------------------
>
> ZENITH 175-2721
>
> New Tuner Pins Out Different - Loads Down 5v Line
>
> Service Talk
>
> Change Rx3417 [Near Ic2100 At Rear] From 680 To 470 Ohms
>
> -------------------------------------------
>
>
> ZENITH B25A11Z
>
> Looks Like Tuner, Snow Only And Occassional Black Streaks Like Video
>
> (Martronics)
>
> Replace Icx200. Check Pin 3 For 4v. Also Tuner Pin 1 Agc Was At 0v. Part #
> 2211165
>
> ---------------------------------------------------------------
>
> ZENITH B25A24Z
>
> Tuning Static
>
>
>
> If You Are Not Receiving Broadcast Sound, But Have Audio Noise: Remove
> Tuner Or Disconnect Pins 4 & 5, Then Turn Set On, If Snow Doesn'T Return,
> Check Clock & Data Lines Pins 5 & 6 On Eeprom. If Clock & Data Are There,
> Problem Most Likely Icx2200 (Ta1268n) Zenith # 221-1165. Part Actually
> Cheaper From Zenith.
>
> ---------------------------------------------------------------
>
> Bob Waterman, CET® #RI-28
> Master Technician License #9109
> Service Manager / Parts Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxx
>
>
>
>
>
> ----- Original Message -----
> From: "tvservice" <tvservice@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, October 08, 2004 2:34 PM
> Subject: [TechAssist] Zenith B25A02Z tuner problem
>
>
> > Hey gang,
> > I picked up this tv, when you auto program off air channels it only
picks
> up UHF no VHF.
> > If manual select a VHF channel only snow. If you Autoprogram in CABLE
mode
> it picks up VHF and 1 UHF (channel 21) on 57.
> > I suspect a faulty tuner 175-2771 but leaning toward the eeprom. Anyone
> else have clue?
> > Robert
> > tvservice@xxxxxxxxxxxxx
> > H & H Electronics Inc
> >
>
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