CHAMP ELECTRONICS -" THE VINTAGE VALVE AMP HOSPITAL"

NOTTINGHAM, ENGLAND

SERVICING OF A LANEY LC15 COMBO AMPLIFIER





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Coming through the workshop as a completely dead unit, it didn’t take long to diagnose the duff output transformer.




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Typical scorching of a PCB with the heat from the output tubes. This also dries out the solder over time.




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The new output transformer in place. Notice at the side of the original, I have used a larger stack size. In my opinion, some of the later Laney (BLT Products) use output transformers that are really too small. The larger one that I made for this sounds so much better, with more headroom. Check-out Richard’s testimonial e-mail at the end of the article.




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I had run out of the blue card I usually use to finish a transformer winding so….I had to finish it with the Mylar tape instead. It doesn’t look so nice but the transformer still works the same!




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RICHARD'S EMAIL REGARDING THE LANEY:


"Hi John.

Thanks for the photos and for the work done.  The amp sounds great and the new output transformer has really improved the tone, headroom and power-stage overdrive.

Cheers, Richard”






 

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