[TechAssist] Re: Toshiba CF32C50, very low audio
- From: <agower@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 21 Jun 2005 16:42:39 -0700
Check to see if it has a sbx1637 mounted inside of stereo module. hth
agower@xxxxxxxxxxxxx
Cordova TV
Adolph Gower
3415 Comet Court
Sacramento, Ca. 95827-2924
Phone: (916) 698-6565
Fax: (916) 363-8359
----- Original Message -----
From: <gulftech@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: 2005Äê6ÔÂ20ÈÕ 16:37
Subject: [TechAssist] Toshiba CF32C50, very low audio
>I am missing something here that is driving me crazy.
>
> I originally thought it was the typical Sony sound module (SBX1637) bad.
> I replaced that a little over three years ago, but put a new one in. No
> change. It uses a TA8200AH audio output. I have audio in and out both
> channels and at the speakers, but only the slightest sound FROM the
> speakers. I subbed the speakers with no improvement. The 470 ufd
> coupling caps are good. Tried a new TA8200. No change. Checked the
> internal/external speakers switch. There is audio present at the audio
> out jacks.
>
> The output stage seems to be working, because the signal is greater on
> the output than the input. The darn thing SHOULD work, but it doesn't!
> I have 27v B+, 5V on the mute, and about 11V on each output pin. No
> print, but I think that is about normal.
>
> If you have a scan of the output stage or the voltages on IC610
> (LA7800AH), it would sure help. Winstips lists QN14 and QA60 as possible
> causes for no audio, but they check good and besides I do have audio
> present at both inputs and outputs.
>
> Had enough fun for today.
>
> TIA,
>
>
> Ken Smith
> Gulf Technical Services
> 3034 Gulf Breeze Parkway
> Gulf Breeze, FL 32563
> 850-934-8324 (Voice) 850-932-0819 (Fax)
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