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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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22nd Oct 2020, 10:41 am | #1 |
Heptode
Join Date: Sep 2010
Location: Hythe, Hampshire, UK.
Posts: 626
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Mullard LP1159 Circuit Diagram
I'm not sure this is the right place for this information but I'm sure the Mods will move it if required.
I had occasion recently to repair an LP1159 module (the one without the oscillator coil) but could not find a circuit diagram. This led me to trace out the circuit and draw it up for future use so I thought it would be good to share this information with the forum. Incidentally the fault turned out to be an open circuit internal capacitor on T3 which I had to replace with an external one, the symptom being virtually no output. I had initially thought it would be one of the AF11x transistors but these were changed to no effect. |
23rd Oct 2020, 1:14 pm | #2 |
Dekatron
Join Date: Feb 2009
Location: Chesterfield, Derbyshire, UK.
Posts: 3,737
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Re: Mullard LP1159 Circuit Diagram
Thanks for the cct Peter ,well done finding the capacitor fault , Mick.
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23rd Oct 2020, 5:40 pm | #3 |
Nonode
Join Date: Jun 2016
Location: Bognor Regis, West Sussex, UK.
Posts: 2,288
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Re: Mullard LP1159 Circuit Diagram
Thanks Peter.
Peter |