[sebhc] H89 strange problems....

Joe Smith bandit1921 at cox.net
Wed Jan 18 11:37:07 CST 2006

I used the big rectifier that Radio Shack used to carry..Part NUmber 
is: 276-1185

At 11:56 AM 1/18/2006 -0500, you wrote:
>    Robin;
>    Those are hum bars in your video, and your troubleshooting is in 
> the right area -- the power supply.  One weak point in these units 
> is the bridge rectifier.  It's the large one in a metal case with 
> four push-on terminals. Replace it with one rated for higher current.
>    While you're at it, replace the connectors with soldered 
> connections to both ends of the wiring to the bridge.  The molex 
> connector would frequently fail from overheating due to the current 
> it carried.  Soldering the wires to the bridge and the circuit 
> board will remove this as a future problem.
>    After fixing many of these back in the day, I sent it in to 
> Heath/Zenith and they published it as a service note.
>    Paul Pennington
>    Augusta, Georgia
>Delivered by the SEBHC Mailing List

Joe Smith
Conbuilder debugger /Programmer

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