[TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead=fixed!!!!!!!!!

From: "Richard La Placa" <continentaltv@xxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx
Date: Fri, 05 Sep 2003 13:14:51 -0400
phew!!!!!!!!!!

The trace from pin 5 on eprom was just about open where it runs around the 
chipper checker socket.
After calling the 900 number twice and going around in a circle with every 
troubleshooting flow chart, and changing the "T" chip, the micro, and eprom 
for the last week!!!!!!!!!!!  There was no evidence of a fluid leak, but 
something ate this up.



Richard La Placa
Continental TV
312a Park Row
Chestertown, Md,21620
Fax&Phone-410-778-1113
continentaltv@xxxxxxxxxxx





>From: <tvservice@xxxxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: <techassist@xxxxxxxxxxxxx>
>Subject: [TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead
>Date: Thu, 4 Sep 2003 13:50:39 -0500
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>
>Data from the micro turns on the horizontal drive from T chip
>Sounds like your T chip is bad
>Robert
>tvservice@xxxxxxxxxxxxx
>H & H Electronics Inc
>Dallas, TX
>----- Original Message -----
>From: "Richard La Placa" <continentaltv@xxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Thursday, September 04, 2003 4:00 PM
>Subject: [TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead
>
>
> > Hi
> >  When I disconnect pin 3 & 4 on micro I get 4.8 volts at the pads. When 
>I
> > reconnect them I dont get anything. Can a bad T chip cause this? Does it
> > need the bus& data from the micro to produce any horiz & vert?I have
> > voltages on the la7612. I have4.8 volts at the bus & data lines there ,
>but
> > when I re-connect pin 3&4 on micro they dissapear.
> > Tia
> > Richard La Placa
> > Continental TV
> > 312a Park Row
> > Chestertown, Md.
> > fax&phone-410-778-1113
> > website: http://www.continentaltv.homestead.com/
> > continentaltv@xxxxxxxxxxx
> > ----- Original Message -----
> > From: "Mouton's Electronics" <moutons@xxxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, September 03, 2003 1:07 PM
> > Subject: [TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead
> >
> >
> > > Try disconnecting the trigger to the dual voltage regulator (5/12v 
>reg)
>so
> > > that the regulator will stay on then disconnect pin 3&4 on the micro
>(the
> > > run clock and data) plug in and press the power. If the set comes on 
>you
> > > have something pulling down the run clock and data lines. You can
> > reconnect
> > > pin 3&4 then disconnect the clock and data to each IC one at a time 
>and
> > try
> > > the set, if it comes on then change that IC. As long as these lines 
>stay
> > low
> > > the set will never run.
> > >
> > > I have tried to keep up with this thread to get new info and hope 
>noone
> > > suggested this already, sorry if this is redundant.
> > >
> > > Hope this helps
> > >
> > > Jason
> > > Mouton's Electronics
> > >
> > > ----- Original Message -----
> > > From: "Richard La Placa" <continentaltv@xxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Wednesday, September 03, 2003 12:21 PM
> > > Subject: [TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead
> > >
> > >
> > > > Hi
> > > > I applied 5 volts to pin 5 of IC 14701 and got 5 & 12 volts out , 
>but
> > the
> > > > set still wont come on.Pin 19 on micro is still dead. cant see any
> > > > corrossion.Get a little pop from speakers when first  plugged in and
> > after
> > > a
> > > > little while after it is unplugged you can hear another little pop,
>like
> > a
> > > > shutdown circuit is releasing.I guess I'm really stuck on this one.
>Does
> > > > anybody know of an rca tech line a non asc can call?
> > > >
> > > >
> > > >
> > > > Richard La Placa
> > > > Continental TV
> > > > 312a Park Row
> > > > Chestertown, Md,21620
> > > > Fax&Phone-410-778-1113
> > > > continentaltv@xxxxxxxxxxx
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > >From: <tvservice@xxxxxxxxxxxxx>
> > > > >Reply-To: techassist@xxxxxxxxxxxxx
> > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > >Subject: [TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead
> > > > >Date: Tue, 2 Sep 2003 09:12:03 -0500
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> > > > >
> > > > >+153 volts in standby is normal
> > > > >Unsolder R14708 on front of main board (labeled R708 on board)
> > > > >then in standby measure for +5 and +12 at pins 6 and 7 of IC14701
> > > > >if missing eithe replace IC14701 or look for load on these pins
> > > > >Also look very carefully around eeprom and micro for coolant 
>leakage
> > > > >Had this last week finally removed chipper check service connector
>from
> > > > >board found corrosion underneath
> > > > >Robert
> > > > >tvservice@xxxxxxxxxxxxx
> > > > >H & H Electronics Inc
> > > > >Dallas, TX
> > > > >----- Original Message -----
> > > > >From: "Richard La Placa" <continentaltv@xxxxxxxxxxx>
> > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > >Sent: Tuesday, September 02, 2003 8:48 AM
> > > > >Subject: [TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead
> > > > >
> > > > >
> > > > > > Hello everyone,
> > > > > > I am still in the dog house on this one.
> > > > > > I changed the micro & eprom and still no go. Can anybody tell be
> > what
> > > > >the
> > > > >B+
> > > > > > should be in the standby condition? I have 153.4 volts at the 
>hot.
>I
> > > > >tried
> > > > >a
> > > > > > 40 watt bulb for a load and get 140 volts there, but all other
> > voltage
> > > > > > supplies are still high. Can this cause the micro to lock up?
> > > > > > tia
> > > > > >
> > > > > > Richard La Placa
> > > > > > Continental TV
> > > > > > 312a Park Row
> > > > > > Chestertown, Md,21620
> > > > > > Fax&Phone-410-778-1113
> > > > > > continentaltv@xxxxxxxxxxx
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > >From: <tvservice@xxxxxxxxxxxxx>
> > > > > > >Reply-To: techassist@xxxxxxxxxxxxx
> > > > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > > > >Subject: [TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead
> > > > > > >Date: Thu, 28 Aug 2003 14:27:44 -0500
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> > > > > > >
> > > > > > >Sounds like a bad micro to me
> > > > > > >Robert
> > > > > > >tvservice@xxxxxxxxxxxxx
> > > > > > >H & H Electronics Inc
> > > > > > >Dallas, TX
> > > > > > >----- Original Message -----
> > > > > > >From: "Richard La Placa" <continentaltv@xxxxxxxxxxx>
> > > > > > >To: <techassist@xxxxxxxxxxxxx>
> > > > > > >Sent: Thursday, August 28, 2003 1:56 PM
> > > > > > >Subject: [TechAssist] RCA Mod#P46813BL, CH# PTK195AA-dead
> > > > > > >
> > > > > > >
> > > > > > > > Help???
> > > > > > > >  When I unsolder pin 23 & pin 24 on micro.(U13101) I get 
>real
> > good
> > > > >clock
> > > > > > >&
> > > > > > >data pulses coming out, but the DC voltages are low.The DC
>voltage
> > on
> > > > >the
> > > > > > >pads is 4.9 volts , but when I reconnect, I only get 1.6 volts 
>on
> > pin
> > > > > > >23(data) & 2.29volts on pin 24(clock). The micro seems to be
> > holding
> > > > >the
> > > > > > >voltage down.I don't have anything coming out of pin
> > 19(run/stby).The
> > > > >micro
> > > > > > >costs $49.00, and I am trying to make sure it is really bad
>before
> > I
> > > > >get
> > > > >a
> > > > > > >new one. I dont see many of projection sets here and won't need 
>a
> > > spare
> > > > > > >micro if this is still good.
> > > > > > > > Any help greatly appreciated
> > > > > > > > Richard La Placa
> > > > > > > > Continental TV
> > > > > > > > 312a Park Row
> > > > > > > > Chestertown, Md.
> > > > > > > > fax&phone-410-778-1113
> > > > > > > > website: http://www.continentaltv.homestead.com/
> > > > > > > > continentaltv@xxxxxxxxxxx
> > > > > > > >
> > > > > >
> > > > >
> > >
> >
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[TechAssist] Re: RCA Mod#P46813BL, CH# PTK195AA-dead=fixed!!!!!!!!!

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