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ARCHIVED FORUM -- March 2012 to February 2022
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This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022

 

Penta amplifier input control board component question

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punkieys17
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punkieys17 Posted: Sun, Sep 4 2016 8:53 PM

I'm repairing a set of Pentas and picked up a spare broken amp. I've found almost all the transisitors were blown in the main amp section.

I do have a repair manual for them but there are three comonents not shown on my diagram or component list - can someone help please.

On the input control board (thats the board mounted in the panel that hinges out) there are two transistors (TR15 and TR16) and a diode (D10).  I would be very grateful if anyone can help with what these should be and/or a better diagram/component list. 

I have found other components replaced with incorrect ones so although the two transistors seem to test Ok I would prefer to check them against a known working one...

Any help greatly appeciated.

Julian

 

 

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