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Techtalk • View topic - TAB v372/1-D / Rauchender T1 und T101 (Ersatztyp vom BC618)

TAB v372/1-D / Rauchender T1 und T101 (Ersatztyp vom BC618)

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Moderator: kubi

TAB v372/1-D / Rauchender T1 und T101 (Ersatztyp vom BC618)

Postby holger777 » Sun Sep 12, 2010 6:52 pm

Hallo,

ich hab hier noch einen alten und kaputten TAB v372/1-D, den ich mir für
meinen Sendebegrenzer reparieren will, Recapped ist er schon. Ansonsten
hab ich da die Transistoren T1/T101 als defekt erspäht (beide nicht nur
technisch, sondern auch optisch den Heldentod gestorben). Den BC618
bekomme ich nirgend wo mehr. Als Ersatztyp für den BC618 hat man mir
an der Conrad Theke den BC879 herausgesucht. Den hab ich dann auch
verbaut. War auch erst alles gut. Hab dann auch Ton gehabt für ein paar
Sekunden. Danach lösten sich T1 und T101 in Rauch auf..... :shock:

Hmmmm ..... watt is nu falsch? Der Ersatztyp oder irgendwas drumherum?
Hat jemand von euch eine Idee, bzw. könnte jemand von euch mal schauen,
ob der BC879 tatsächlich als Ersatz taugt?

Danke schon mal für eure Hilfe!
Bin im Moment echt ratlos ..... :cry:

Viele Grüße
Holger
holger777
 
Posts: 289
Joined: Tue Jul 07, 2009 11:24 am

Postby DerEber » Mon Sep 13, 2010 6:34 am

Beide gleich, sowas.
Also wenn T1 sich spektakulär verabschiedet könnte es sein, daß irgendetwas anderes kaputt ist und die Schaltung zu viel Strom zieht.
Evtl. sind so auch schon die originalen Transistoren gestorben.
T3,T4 sind in ordning, ja?
Wegen dem Ersatztyp, such doch im Internet mal die Datenblätter für
beide raus und vergleich mal die Werte.

Gruß,
Stephan
DerEber
 
Posts: 477
Joined: Fri Mar 23, 2007 2:04 pm
Location: Süden

Postby holger777 » Mon Sep 13, 2010 8:41 am

holger777
 
Posts: 289
Joined: Tue Jul 07, 2009 11:24 am

Postby DerEber » Mon Sep 13, 2010 9:20 am

DerEber
 
Posts: 477
Joined: Fri Mar 23, 2007 2:04 pm
Location: Süden

Postby holger777 » Mon Sep 13, 2010 6:21 pm

Hallo Stephan,



Wie vermutet waren C1 und C24, sowie T1, T3 und T4 platt. R1 hatte
schwarze Füße und wurde auch getauscht. Statt der Tantals hab ich
ELKOs genommen. Funktioniert alles hier soweit.

Danke nochmal für Deine Hilfe!

Grüße
Holger
holger777
 
Posts: 289
Joined: Tue Jul 07, 2009 11:24 am

Postby DerEber » Tue Sep 14, 2010 1:11 pm

Spitzen Sache!
Vielleicht kann trotzdem noch jemand was zu T1 sagen. Diesen Schaltungsfall seh ich nämlich öfter.

Gruß,
Stephan
DerEber
 
Posts: 477
Joined: Fri Mar 23, 2007 2:04 pm
Location: Süden


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