[TechAssist] Re: Emerson TS2750D, STR51041 repeat failure and runs hot

  • From: HSWAD@xxxxxxx
  • To: techassist@xxxxxxxxxxxxx
  • Date: Mon, 9 Jun 2003 18:14:06 EDT

Is the Horizontal output transistor the original or a generic replacement? 
Also what is the value of the regulated B+? Hollis Bates. Field 
Engineer-retired, lewiston, Maine, HSWAD@xxxxxxx                                
               
                                               In a message dated 6/9/03 
1:13:43 PM Eastern Daylight Time, jr.myers@xxxxxxxxxxx writes:

> Subj:[TechAssist] Emerson TS2750D, STR51041 repeat failure and runs hot 
> Date:6/9/03 1:13:43 PM Eastern Daylight Time
> From:<A HREF="mailto:jr.myers@xxxxxxxxxxx";>jr.myers@xxxxxxxxxxx</A>
> Reply-to:<A 
> HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> To:<A HREF="mailto:techassist@xxxxxxxxxxxxx";>techassist@xxxxxxxxxxxxx</A>
> Sent from the Internet 
> 
> 
> 
> Would anyone have an idea on this problem? The set seems to work ok but the
> regulator IC, STR51041 seems very hot. The case temp gets up about 70 c
> after 30 minutes or so, that's about 158 f. The data sheet shows the max
> operating temp as 125 c or 257 f. Well within specs but still pretty hot. It
> has failed twice along with two transistors and two resistors. Capacitors
> have been checked and/or replaced also.
> **************************************************
> Jim Myers
> Since 1972
> Telrad Electronic Services Co.
> Fort Wayne, IN 46815
> *************************************************
> 
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