[TechAssist] Re: JVC AV-35750, chasis GKII, popping noise from speakers at turn on...sometimes
- From: "Damon" <damon101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 24 Jun 2004 06:33:58 -0500
Check the mute line, caps or transistor on the mute line will cause a pop
during start up if they're old.
Be sure to quote an additional $200 to resolve the audio mute delay....or
higher.
Damon Brunger
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Kevin" <kevintv@xxxxxxx>
To: "TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
Sent: Thursday, June 24, 2004 12:19 AM
Subject: [TechAssist] JVC AV-35750, chasis GKII, popping noise from speakers
at turn on...sometimes
| The original problem was a humming noise from the speakers for the first
| 2 or 3 minutes of operation. Cure was replacing C926 1000uF @ 16 volts
| (P/S), high ESR; and C523 1uF @ 160 volts (horizontal). C926 is part of
| the 13 and 12 volt lines, and the 12 volt line feeds the audio circuit.
|
|
| Now sometimes the set makes a popping noise from the speakers when it is
| turned on. Customer is very particular. Even though I have repaired
| the original complaint, he also wants this "new" problem dealt with. It
| only happens only once every 5 times or so. He is worried that
| something else will go wrong. I ESR'ed every other cap in the P/S and
| Audio circuits with no luck. Thanks.
|
| Kevin Wilks
| Kevin's TV & Video Repair
| Penticton BC Canada
| kevintv@xxxxxxx
|
|
|
|
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