[TechAssist] Re: Philips 25PS40-S101 25M800 audio pops.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 18 May 2005 15:31:49 -0400
SYMPTOM A small number of these chassis may have
a cracking or popping in the sound At times it may be
related to a specific volume control setting.
CURE Replace SMD capacitors 2849 and 2850, using
service code 3198 016 31020.
These parts are located adjacent to pins 24 and 25 of
7831, the DBX stereo decoder IC.
SYMPTOM: Sound intermittently "screeches", very loudly.
Especially noted with dipole (rabbit ears) or other weak
signal conditions.
CORRECTION:
Replace the following SMD parts in section 6E, between
the UOC (7200) and edge of board.
2227 use 1n2 (1.2 nf) capacitor 4822 122 32614
2228 use 330pf capacitor 4835 122 87032
3232 use 3k9 (3.9K ohms) resistor 4835 111 37254
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, May 18, 2005 3:27 PM
Subject: [TechAssist] Philips 25PS40-S101 25M800 audio pops.
> Philips
> 25PS40-S101
> 25M800
>
> Audio intermittantly pops. Have noted it on rabbit ears so far.
> They seem to indicate may be worse with DVD (Haven't Pulled one out to try
> yet). Saw Bob's Post from 2002 on Screeching audio (M8 audio ....). But,
> wanted to know what if any other possibities exist.
>
> Peter Oliver
> Tucson Radio TV
>
>
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