[TechAssist] Re: Toshiba PTV TP55G60, Shutdown
- From: "Larry E." <videotech@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 27 Mar 2002 18:28:22 -0500
Bruce, try hooking up one tube at a time and see if it shuts down, you
may have a bad tube, I don`t completely understand your post, with the
anode lead from the flyback disconnected from the HV block it shuts down but
hooking it up to the HV block and then disconnecting the three output
leads of the HV block it stays running???
Bruce Youmans wrote:
>Manuf: Toshiba
>Model: TP55G60
>Symptom: Shutdown
>
>Have followed Toshiba's troubleshooting procedure found on their Web Page.
>Low voltage power supply seems to be regulating fine in to a 100 watt light
>bulb load only (All loads removed by removing fuse F470).
>
>Isolated convergence IC's and set still shuts down.
>Removed high voltage lead from high voltage transformer to high voltage
>block, still shuts down.
>With high Voltage lead from high voltage transformer connected and three anode
>leads from high voltage block disconnected, set does not shut down.
>
>Does this sound like a bad high voltage block or have I just reduced the load
>enough that the set no longer shuts down? Even though the low voltage power
>supply is regulating fine, I'm wondering if I have an under voltage shutdown
>problem under full load?
>
>Confused. TIA.
>
>Bruce
>Bruce's TV Service
>Sierra Vista, Arizona
>
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