[TechAssist] Re: magnavox tv 27z1 chassis red screen/w retrace shutsdown
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 3 Oct 2001 09:22:58 -0500
This sounds like a shorted crt, red cathode to heater. Pull the red driver
transistor and if the red cathode voltage is still low check it with the crt
board disconnected from the crt, if the voltage comes up then the crt is
shorted. If not the socket spark gap may be shorted.
Jim Myers
jr.myers@xxxxxxxxxxx
----- Original Message -----
From: "joe weaver" <weavel@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, October 02, 2001 5:06 PM
Subject: [TechAssist] magnavox tv 27z1 chassis red screen/w retrace
shutsdown
>
> hello everyone,
> this is a magnavox tv..model no#RS2749c401 chassis 27z1
> set comes on with red screen /w retrace lines then 10 seconds shutsdown..
i
> have checked q650,q651,q652 red,green,blue drivers and q660 luma
> buffer..all check good..
> on crt board i have checked r1 through r16 q1,q2.q3 show 13.5 volts on
> emitters which is normal.. c1 thru c4 is good..
> i resoldered j1/j2/j3 and crt socket complete.. has anyone any
> tips on this tv?? any help would be appreciated..
> thank you...joe
>
> william j.weaver KG8CJ
> weavers electronics
> 268 w.water st.
> oak harbor,ohio 43449
> 1-419-898-4129 phone
> 1-419-898-5054 fax
> weavel@xxxxxxxx
> www.cros.net/weavel
> "God Bless America"
>
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