[TV] Re: (no subject) zenith PV4655
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[TV] Re: (no subject) zenith PV4655
Hi, Tech guy, How are you, Please what is LC102? Thank
you.
--- Dale Kemp <jdkemp2003@xxxxxxxxx> wrote:
> Here is some info I found at repairworld.com that
> may help.
> Just for fun, please include a subject line in your
> emails.
> Thanks and good luck,
> Dale Kemp
> TELEVISION zenith PV4655 LKD CONVERGENCE
> ELECTROLYTIC caps blue and black ones dried or leaky
> used LC102 TO CHECK THEM conv/board is located under
> neath the speaker gril it has the adjustments on the
> board
> TELEVISION zenith PV4655 lk9 convergence replase
> all blue capacitor on convergence board located on
> front of tv under neath speaker grill it has the
> adjustments on the board little blue caps
> electrolytics.
> TELEVISION ZENITH PTV WITH 9-700 PV4655LK9 NO
> PIX/HORIZ LINE WHEN RAISE G2S UNPLUG PIP4,(BUS
> LINE,),(BYPASS PIP (PIP2,PIP2A)
> TELEVISION ZENITH PV4655LK9 INTERMIT. RED
> OVERDRIVE, PIC BLOOMS WHEN COLD REPLACE HV
> SCREEN/FOCUS ASSY, LISTED AS BLEEDER ASSY
> TELEVISION ZENITH PV4655LK9 DEAD REPLACE Q3405
> NTE2310 ON 9-628-09 MODULE
>
>
>
> Projector Zenith PV4655LK9 has small picture.
> According the tip, the output
> voltage from switch mode power supply is lower than
> normal. But I don't have
> service manual. Can anybody tell the normal voltages
> accross cap CX3516,CX3517?
> Thank you!
>
>
>
> gzeng398 Posted: May 16 2001, 05:04 PM
>
>
>
> Guangyao Zeng
>
>
> Group: Members
> Posts: 58
> Member No.: 6494
> Joined: 5-February 01
>
>
>
> Re: Projector Zenith PV4655LK9 -- Small picture'
>
> '"Gavin" wrote:
> >
> >Projector Zenith PV4655LK9 has small picture.
> According the tip, the output
> >voltage from switch mode power supply is lower than
> normal. But I don't
> have
> >service manual. Can anybody tell the normal
> voltages accross cap CX3516,CX3517?
> >Thank you!
> Voltage accross CX3516 and CX3517 is 129V. Is it
> normal?
>
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> Combo Units Repair Forum
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> Zenith Projection, Model PV4655BG9
>
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> khadra68 Posted: Mar 10 2004, 04:48 PM
>
>
>
> Kinda Electronics
>
>
> Group: Members
> Posts: 125
> Member No.: 8700
> Joined: 27-June 03
>
>
>
> I'm working on a Zenith model PV4655BG9 with the
> 9-700 digital board. The set came on with no pic and
> no sound. Turning up the G2s revealed vertical
> collapse. Replacing vert. out and capacitors has no
> effect and the output has 24 and 12v supplies. could
> the problem be with the 9-700 and if so, any guesses
> as to what it might be? any help is greatly
> appreciated.
>
> thanks,
>
> jason
>
> --------------------
>
>
>
> jfitz768 Posted: Mar 11 2004, 12:05 AM
>
>
>
> James Fitzsimmons
>
>
> Group: Members
> Posts: 332
> Member No.: 8357
> Joined: 12-March 03
>
>
>
> Is this a total flat line or very small vertical
> deflection?I had some back in the day that had
> corrupted vertical parameters in the eprom.Some only
> had 3 inches of vertical deflection which I could
> only see by turning up the screen control.Punched in
> numbers directly from service data for vertical
> height and increased until it came up.If you have a
> total flatline I would check to see if you have a
> ramp waveform on the connector feeding drive from
> the 9-700 to the deflection board and try the
> vertical parameter.Don't remember what parameter no.
> was for vert height but service mode access is hold
> down menu until menu disappears(Since you can't see
> it at least 30 seconds)9-8-7-6-enter.You will need
> the parameter no. which I can look up if no one else
> finds it since you can't see the menu(raster is
> totally blanked until you get sufficient
> deflection).Never had too many problems with the
> 9-700 itself just bad connections at the regulator
> transistors on the side and an occasiona!
> l bad
> tuner.Only chip that I had to replace on them was
> one of the sound ics,never the deflection ic on
> it.The 9-700 only comes with the soldered on
> ics.Doesn't come with any of the plug ins.
>
>
>
> 25495627 Posted: Mar 11 2004, 12:23 AM
>
>
>
> John Rudasill
>
>
> Group: Members
> Posts: 209
> Member No.: 4037
> Joined: 10-August 98
>
>
>
> On the 700 board - IC2701 is the DPU deflection
> processor unit. Vert driver comes from junction of
> R2707 and R2708 (from pins 26 and 27), goes thru
> C2103 into base of Q2100, out emitter via L2101 to
> connector 4K3 pin1, and over to deflection board.
> IC2701 is Zenith number 221-563, in stock at $14.52
> dealer.
>
> --------------------
> John Rudasill Electronics Service
> Servicing Central PA for 38 Years
>
>
>
> khadra68 Posted: Mar 16 2004, 03:56 PM
>
>
>
> Kinda Electronics
>
>
> Group: Members
> Posts: 125
> Member No.: 8700
> Joined: 27-June 03
>
>
>
> thanks for the tips.. so far i have been unabale to
> utilize the service menu. the set has about 3-4" of
> vertical deflection for about 10 seconds before it
> slowly goes to flat line. i don't have a manual for
> service parameters so if anyone knows which one is
> vertical height, it would be very helpful. thanks
>
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