[TechAssist] Re: RCA CTC177

Glenn,

 Did you scope the CRT for DC at the socket pins with the set off but plugged 
in? Does the spot extinguish if you unplug the set after shutting it off?

Dominic DiLeo
Atlantic TV
Freeport, Maine
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In a message dated 9/27/04 6:18:55 PM Eastern Daylight Time, 
mail@xxxxxxxxxxxxx writes:

<< Max, you read my mind.
 I actually tried shorting the 200 volt line after turn off with no effect. I
 looked at Q5004 as a possible culprit too with no success. The strange thing
 is if I pull the plug as opposed to turning it off the spot goes away.
 Dunno....anyone???
 
 Glenn Larkman
 Audiotech
 256 Nth Hwy 101
 ENCINITAS CA 92024
 760 944 9048
 FAX 944 0345
 mail to"mail@xxxxxxxxxxxxx"
 "www.audiotech.net"
 ----- Original Message ----- 
 From: "Old TV Man" <mebonnell@xxxxxxxxx>
 To: <techassist@xxxxxxxxxxxxx>
 Sent: Monday, September 27, 2004 2:18 PM
 Subject: [TechAssist] RCA CTC177
 
 
 Glenn - The only thing I could suggest is you may have a elect. cap.
 holding its charge - such as C5003 on 200V supply line. Good luck.
 
 Max Bonnell
 Bonnell TV
 Robinson, IL
 
 Sender: techassist-bounce@xxxxxxxxxxxxx From:
 mail@xxxxxxxxxxxxx(G.Larkman) Date: Mon, Sep 27, 2004, 1:06pm (CDT-2)
 To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] Re: RCA CTC177
 Reply=A0to: techassist@xxxxxxxxxxxxx
 
 Thanks to everyone for all the replies but I know what afterglow is.
 Adjusting G2 has no effect and if the chassis is swapped then the
 problem stays with the chassis and not the tube.
 
 This started happening about a week ago according to my customer..
 
 Glenn Larkman
 Audiotech
 256 Nth Hwy 101
 ENCINITAS CA 92024
 760 944 9048
 FAX 944 0345
 mail to"mail@xxxxxxxxxxxxx"
 "www.audiotech.net"
 
 ----- Original Message ----- 
 From: "tvservice" <tvservice@xxxxxxxxxxxxx>
 To: <techassist@xxxxxxxxxxxxx>
 Sent: Monday, September 27, 2004 12:58 PM
 Subject: [TechAssist] Re: RCA CTC177
 
 This is normal (according to Thomson/RCA) You have very good emission in
 the tube
 
 At worst you may need to decrease the G2 control
 
 Robert
 tvservice@xxxxxxxxxxxxx
 H & H Electronics Inc
 
 ----- Original Message ----- 
 From: "G.Larkman" <mail@xxxxxxxxxxxxx>
 To: <techassist@xxxxxxxxxxxxx>
 Sent: Sunday, September 26, 2004 5:12 PM
 Subject: [TechAssist] RCA CTC177
 
 Hi all,
 Have a 27" ctc177 with a spot in the middle of the screen that slowly
 dissipates after after the set is turned off. Picture is normal when
 turned on.
 I dont see a spot killer circuit anywhere in this set and wonder if
 anyone else has come across this before?.
 
 BTW, if the power plug is pulled as opposed to turning set off from the
 control panel then there is no spot in the screen.
 
 Glenn Larkman
 Audiotech
 256 Nth Hwy 101
 ENCINITAS CA 92024
 760 944 9048
 FAX 944 0345
 mail to"mail@xxxxxxxxxxxxx"
 "www.audiotech.net"
 ----------------------------------------------
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