[TechAssist] Re: Proscan PS35682 CTC170
- From: Dennis Viereck <wa6ati@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 14 Nov 2001 08:54:17 -0800
This chassis does not support this type of menu driven system. That
system was for the CTC178, and 179. Not the CTC170. This one does have a
menu system, but it is not like the one the previous writer is
describing.
This symptom is probably do to a defect in the Pixel Graphics module. It
is the module that stands vertically on the signal board on the far
right hand side. It is in a shielded module.
When this chassis is "ON" the Pixel Graphics module takes over the
system control from U3101. Remove this module and disassemble it.
Inspect it for poor solder connections, and possibly a contaminant,
caused by some of the brown colored circuit board bumpers, leaking out
and on to the board. These bumpers are a round disk with sticky glue on
the back. They dry out, crack, then leak.
I would not replace any micro or EEPROM until you check the Pixel
Graphics board first.
Dennis Viereck
"OrpheusComputing.com Repair" wrote:
> Tom;
>
> To enter service mode, push and hold the [Menu] button on the
> set. While holding, push and release the [Power] button, then
> the [Vol +] button.
>
> You will now have some information on the screen: "P0 V0"
>
> To actually be able to change these values, you must push
> [Vol +] on the remote so the information reads V76. Then
> pushing on the Channel +/- will change the "P" value.
>
> P1 - 3 are error codes. If there is a problem with the set
> that can be self-diagnosed, the "V" will report the code.
> These codes are available in the RCA repair manual.
>
> P4 - 7 control the horizontal size, shift, vertical size and
> shift.
>
> You may also find a summary leaflet clipped somewhere inside
> the chassis. The procedures for getting into the service
> mode, as well as the service items of interest will be there.
> -Clint
>
> God Bless Us All
> Clint Hamilton, Owner
> http://OrpheusComputing.com
> sales@xxxxxxxxxxxxxxxxxxxx
> Fax: 209-882-9602
> TechAssist Administration
> http://tech-assist.org
> techassist@xxxxxxxxxxxxx
> (PLEASE include previous correspondence
> if replying to this email!!)
>
> ----- Original Message -----
> From: "Tom Barklow" <meservice98520@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, November 13, 2001 1:34 PM
> Subject: [TechAssist] Proscan PS35682 CTC170
>
> No CC and functions slow to to respond. Need service menu
> access procedure and eeprom and micro part #'s. Suggestions
> what else to look at.
>
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