[TechAssist] Re: Realistic Stereo Receiver STA-2100
- From: "RS Tek Inc" <rstek@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 12 Nov 2001 12:10:32 -0500
Check the power supply that runs the protection circuit. They can go bad,
also the transistor that sinks the relay can open up as well. See if you
have dc on the speaker contacts that feed the relay.
Good Luck
Frank
----- Original Message -----
From: "Tel-Tek Electronics" <teltek@xxxxxxxxxxx>
To: "AAAA TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
Sent: Monday, November 12, 2001 1:44 PM
Subject: [TechAssist] Realistic Stereo Receiver STA-2100
>
> Anybody worked on these old Stereos.
> Customer complained of relay cutting out periodically.
> Now relay won't activate at all. All O/P transistors good. -57 and +57
volts
> on collectors. No fuses blown. Have 24 volts at relay coil. About all I
can
> say, since I have no Circuit for this.
>
> Thanks;
>
> -Ed-
>
>
> teltek@xxxxxxxxxxx
> TEL-TEK ELECTRONICS.
>
>
>
>
>
>
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