[TechAssist] Re: Zenith PV4661 Projection TV
- From: "Jeff Dougherty" <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 3 Jan 2003 16:38:13 -0500
David,
Troubleshoot your vertical circuit.
I have a feeling there may not have been OSD before..maybe customer was
mistaken.
support@xxxxxxxxxxxxxxxxxx
FAX 717-564-4952
Jeff Dougherty
Intrepid Video & Electronics Be careful of your thoughts.
501 Luther Rd They may become your words
Harrisburg, PA 17111 any moment.
717-909-8844
VCR tips, electronics info & general interest.
www.intrepid-video.com www.tech-repair.net
www.thetoolcaddy.com www.9-11-2001tragedy.com
***********************************************************************
----- Original Message -----
From: "David Lessard" <mrfixit@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 03, 2003 12:40 PM
Subject: [TechAssist] Re: Zenith PV4661 Projection TV
Hi Larry, Module I need is 9-815 however this is no longer available from
Tristate. Flyback hasn't been made since 1997. Also, new problem, client
turned on TV last night to double check the symptoms and now this is whats
going on. Sound comes on right away, there is a horizontal red/green line
visible for a split second, no menu visisble now, there was before, the
sound is OK and obviously the flyback is working. Being half alive I'm sure
I could fix this beast however I have resources on it what so ever, if
ANYONE has schematics please let me know, I would like to study the circuit
before heading over the customer.
Thanks.
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Larry E.
Sent: Friday, January 03, 2003 9:26 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: Zenith PV4661 Projection TV
David, Don`t have the print so I don`t know the module # you can call
Tri-State and they`ll look it up for you and give you a price, yes there
is a dud charge but Tri-State will also sell it to you outright, there
# is 800-203-7484.
Larry Eastman
American TV & Electronics
Crystal River, Fl.
David Lessard wrote:
> You don't happen to know what module I need? Is it the whole chassis? I
know
> nothing about this projection TV and because of this I believe it may be
> more practical to purchase and swap (is there credit for a dud?). Thanks
> again.
>
> David Lessard
> mrfixit@xxxxxxxxxxx
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Larry E.
> Sent: Thursday, January 02, 2003 8:53 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Zenith PV4661 Projection TV
>
>
>
> 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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--
Larry Eastman
American TV & Electronics
Crystal River, Fl.
http://www.tvjunkyard.com
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