[TechAssist] Re: Zenith PTV Z50Z53, Looks Like Bad CRT's
- From: "Marvin Brown" <n8tnb@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 01 Oct 2001 17:30:07
crt arcs cause the flameproof resistor you are describing to open.the tubes
will work ok even though they arc ocassionally.use carbon composition
resistors in this location they will hold up.I went through the same
experience you did and am still seeing some that havent had the "fix" yet
>From: gulftech@xxxxxxxx
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>Subject: [TechAssist] Zenith PTV Z50Z53, Looks Like Bad CRT's
>Date: Mon, 1 Oct 2001 12:12:04 -0500
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>
>Friends,
>
>This projection set is about four years old. When you turn it on, you
>would think all three CRT's are bad, like a gassy CRT. Have run into
>three of four of these (in various models). The symptom is caused by an
>open 120K resistor on EACH CRT board. (The board is 9-1303-6. The
>resistor is R5102.)
>
>The first one cost me the price of a new blue CRT before I found the open
>resistor.
>
>I write this to inform those of you who haven't seen this before and to
>ask a question of those who have. What causes the resistor to open up?
>Have never had one come back, but it makes me wonder.
>
>
>Ken Smith
>Gulf Technical Services
>3034 Gulf Breeze Parkway
>Gulf Breeze, FL 32561
>850-934-8324 (Voice) 850-932-0819 (Fax)
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