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Palomar 450HD

Skyrider

Skyrider

Member
Apr 9, 2010
21
0
11
34
Leon, GTO. Mexico
Hello all,

This is my first post in this forum athough ive been reading around. This forum has some really great information on it!

Recently a friend brought me his Palomar 450 HD 4 transistor amplifier to see if i could help him out with an over heating problem. The amplifier uses 4 x 1446 transistors and for some reason even if the amplifier is in the "OFF" position the transistors start to heat up. The heating starts with one transistor (middle left) then the others start to heat up as well. They get to the point were they are too hot to touch.

I checked for a stuck relay but that part is fine. Anyone any idea what the heck is wrong with this thing?

Any advice will be greatly appreciated.

Thank you!
 

I don't know the problem, but I would probably look for a blob of solder that has caused a short on two traces.

I had a 6-pill at one point that had a trace shorted...it was running like it only had 5 pills.
 

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    +1
  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
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    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
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  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.


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