[TechAssist] Re: Philips 25" TV M#25ST220L/17 hotel set. Button problem
- From: "Corey Brazell - Audio Video Electronics" <cohbraz@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 16 Sep 2005 12:09:30 -0400
I just checked Force for anything that could pull the line low.
Check resistor 3689 (2.7k) on the keypad board. Around the processor, look
at capacitor 2606 (1n), and resistor 3630 (2.2k).
Corey Brazell
Audio Video Electronics
12169 SC Hwy 121
Newberry SC 29108
----- Original Message -----
From: "Corey Brazell - Audio Video Electronics" <cohbraz@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, September 16, 2005 12:01 PM
Subject: [TechAssist] Re: Philips 25" TV M#25ST220L/17 hotel set. Button
problem
> Probably a SMD capacitor somewhere in the line between the switch and IC
> that either is leaky or the glue underneath is conductive and is pulling
> the
> line low.
>
> Corey Brazell
> Audio Video Electronics
> 12169 SC Hwy 121
> Newberry SC 29108
> ----- Original Message -----
> From: <cgriff4000@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, September 16, 2005 11:57 AM
> Subject: [TechAssist] Philips 25" TV M#25ST220L/17 hotel set. Button
> problem
>
>
>> Just got in this Hotel TV. It is a Philips 25" TV M#25ST220L/17. The
>> unit has a keypad problem. It acts like the Vol- is always pressed. The
>> power led is continuously flashing. The tact switches test fine and
>> there is no noise on the IR. The DC voltage on the buttons is 2.2
>> volts. Should it be higher? When I disable the keypad in the menu,
>> although the LED still flashes, the volume works fine with the remote.
>> With the keypad unlocked, the volume display stays on with volume at 0
>> all the time.
>>
>>
>> Thank you,
>> Chad
>> Griffiths TV/VCR
>> Schenectady, NY
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