[TechAssist] follow up Re: [Fwd: RCA PTV:shuts down,5-10 sec with HV block disconnected. PTK195AP]
- From: Phil Bader <philbad@xxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 03 Nov 2001 12:46:36 -0500
On hunch I changed vert output IC U14501,TDA8172 (NTE1788) no help. I scoped vert output test point TP14501 ,got "trash" for signal,not a vert. ramp waveform. Went back to "T" chip U16201 at TP14502, "vert out, T chip" TP. Scoped it, no vertical at all. I suspect this T chip U16201.No vert. drive to v. output will cause shut down.I am ordering a replacement LA7612N Monday.Will keep posted. Phil Bader wrote: > > -------- Original Message -------- > Subject: RCA PTV:shuts down,5-10 sec with HV block disconnected. > PTK195AP > Date: Fri, 02 Nov 2001 16:24:05 -0500 > From: Phil Bader <philbad@xxxxxxxxxx> > Organization: Jan Phyl TV Inc. Winter Haven, Fl. Estab. 1976 > To: "CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx" > <CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx> > > Projo Model P56812BL, chassis PTK195AP. Shuts down at turn on.Carried > the chassis into shop. Disconnected the HV Splitter block, turned > on,reads about 30 KV ,no illumination inside CRTs,shuts down in about 5 > to 10 seconds.Visual observation shows nothing. TIA, Phil > Help make your TechAssist online repair tips > database better! Submit your fixes here: > http://www.circuitwork.com/techassist/tip/#tips > To unsubscribe write to: > techassist-request@xxxxxxxxxxxxx > with unsubscribe in the subject line. Help make your TechAssist online repair tips database better! Submit your fixes here: http://www.circuitwork.com/techassist/tip/#tips To unsubscribe write to: techassist-request@xxxxxxxxxxxxx with unsubscribe in the subject line.
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