[TechAssist] Re: RCA CTC169 Pix Tube Intermitent Shorting "HELP"
- From: "agower" <agower@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 10 Jun 2003 11:42:19 -0700
1ST POSSIBLE PULL ASSEMBLY TURN CRT FACE DOWN USED A VIBRATE TOOL ON YOKE
BAND TO SHAKE THE SHORT OUT OF THE NECK OF THE TUBE.
2ND USE A CATTLE PROD ON CRT PINS TO BREAK SHORT, FIRST REMOVE THE CRT
SOCKET APPLY PROD TO CRT PINS MAY KNOCK THE SHORT LOOSE.
Adolph B. Gower
Cordova TV & Electronics
10275 Old Placerville Rd. # 5
Sacramento, Ca. 95827
Ph. (916) 363-6565
Fx. (916) 3263-7623
agower@xxxxxxxxxxxxxxxxxx
Source For used parts and NLA Parts
NEC, MAGNAVOX , ZENITH
and many other brands
Fax (916)363-7623
Phone (916)363-6565
agower@xxxxxxxxxxxxxx
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, June 10, 2003 8:53 AM
Subject: [TechAssist] Re: RCA CTC169 Pix Tube Intermitent Shorting "HELP"
> I have a vauge memory of some CRT socket problem???? Don't know if it is
> this set though. Seems that it would be hard to hear a snap if it was in
the
> CRT; sound waves need a medium to propagate so the arc sound was either
> being conducted thru the elements or was external (crt socket, FBT/focus,
> leaky anode cap or missing Dag ground..... But admitaily I'm grapiping at
> straws. Just Ideas for thought.
>
> Peter Oliver
> Tucson Radio TV
>
>
> From: Albert Walfield <albertwalfield@xxxxxxxxxxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] RCA CTC169 Pix Tube Intermitent Shorting "HELP"
> Date: Tue, 10 Jun 2003 11:14:39 -0300
>
> They said they shut it off and when they came back to turn it on it was
> dead. Asked the costumer what the pix was like before it went dead they
said
> it was good and there was no problem there. Ordered in the 2.7 ohm 15 watt
> resistor , 3 volt @ 1 watt Zener and the power supply Kit.
> Ran it up ran fine for about 20 minutes and made a snap went off and came
> back on and never did it for six hours of running. Next morning came into
> shop turned it on and after about 15 to 20 minutes snapped again and shut
> off and back on.
>
> Took my B&K 467 checker and checked the pix tube there was a dim glow from
> the three guns on short lights on checker none on for heater. So I layer
the
> tube face down and did the clean and balance of the guns. And a
rejuvenation
> of the guns as well at 4.7 volt reduced filament not to strip the guns and
> tap neck while doing so but the gun lights were still dimly lit. The
> Emission were like a new tube and tracking was perfect as well,
>
> Installed a filament isolation transformer in heater circuit just to be
safe
> but it still will snap in the neck when running.
>
> Could it be a gun to gun intermittent short and if so is there any way to
> get around this problem other than replacing tube ?
>
> Any input into this matter would be deeply appreciated.
>
> thanks
> Albert Walfield
>
> Albert Walfield's Electronics
> RR#3
> Bridgewater
> Nova Scotia
> CANADA
> B4V 2W2
> Phone or Fax # 902 543-9831
>
>
>
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