[TechAssist] Re: Zenith PV4661 Projection TV
- From: "Larry E." <videotech@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 02 Jan 2003 20:53:24 -0500
Dave, regular 1/2 watt resistors mounted on the top, just a real pain to
see it where it`s located,mine was a PV4665, but I`m pretty sure they
are the same, from the back of the set look at the right corner of the
HOT heatsink and you should be able to see R3244 the 82K, the R3243 is
usually on the other side of the heatsink next to R3244, Remember that
you can always swap the module if it gets too involved, available at
Tri-State module. I usually spend 1 hour troubleshooting a Zenith
Bigscreen to component level, after that I just swap the module, good
luck Dave, Larry E
David Lessard wrote:
> Larry, Thanks for the tips, another couple of questions, are these resistors
> surface mount of through hole? Just wondering what to bring to the customers
> house. Is this TV hard to get into? I would like to appear at least
> semi-intelligent when I open it up, :-)
>
> David Lessard
> mrfixit@xxxxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Larry E.
> Sent: Thursday, January 02, 2003 8:24 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Zenith PV4661 Projection TV
>
>
>
> Dave, did you check/replace R3243 110K 1/2 watt? have to pull one leg to
> check it, goes way up in value and sometimes opens. Note that it`s
> VERY difficult to find, it`s located by the HOT heatsink usually on the
> right side,behind the heatsink, once you find R3244 (82K) your close
> they are in series with each other, have seen several of them cause your
> problem, also causes convergence problems, ie, no video with 3 bowed
> bars, 1 red, 1 blue, 1 green, Hope this takes care of it for you,
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
> www.tvjunkyard.com
>
> David Lessard wrote:
>
>
>>Ed, Yeah I thought about the filament voltage at first but it doesnt make
>>sense that the menu is still present after the picture goes out. So its
>>
> only
>
>>the video that dissappears, what caps are most likely to cause this
>>
> problem?
>
>>Are they surface mount? I have no information on this chassis, can you
>>
> help
>
>>out? Diagrams, schematics, tips, anything...Thanks a bunch Ed.
>>
>>David Lessard
>>Alexandria Electronics
>>mrfixit@xxxxxxxxxxx
>>
>>-----Original Message-----
>>From: techassist-bounce@xxxxxxxxxxxxx
>>[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Tel-Tek Electronics
>>Sent: Thursday, January 02, 2003 4:54 PM
>>To: techassist@xxxxxxxxxxxxx
>>Subject: [TechAssist] Re: Zenith PV4661 Projection TV
>>
>>
>>
>>David;
>>This is the C8S chassis. Without seeing it, hard to say, but sounds like
>>probably a bad connection on the board for the Filament voltage. Unless
>>
> it's
>
>>only the Video that dissapears, then you got some bad Caps to contend with
>>in the Video circuit.
>>
>>-Ed-
>>----- Original Message -----
>>From: "David Lessard" <mrfixit@xxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Thursday, January 02, 2003 4:08 PM
>>Subject: [TechAssist] Zenith PV4661 Projection TV
>>
>>
>>
>>
>>>Hi techs,
>>>
>>>Has anyone ever heard of this model before? Google search turns up
>>>
>>>
>>nothing.
>>
>>
>>>Customer describes the problem being a slow picture start (2-5 minutes -
>>>gradually) however OSG menu is visible before picture starts to come in,
>>>then after 30 minutes picture goes black again, shut down and cool off
>>>period required before trying again. Not sure if OSG menu is still visable
>>>at this point, forgot to ask, I will follow up on this. Any help would be
>>>appreciate.
>>>
>>>Thanks.
>>>
>>>"Share what you know, Learn what you don't"
>>>
>>>David Lessard
>>>Alexandria Electronics
>>>50 Harrison Street
>>>Alexandria, Ontario
>>>K0C-1A0
>>>mrfixit@xxxxxxxxxxx
>>>
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>
>
> --
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl.
> http://www.tvjunkyard.com
>
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--
Larry Eastman
American TV & Electronics
Crystal River, Fl.
http://www.tvjunkyard.com
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