lamortemifabello
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- Sep 27, 2024
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Hi guys, congratulations on this amazing forum. I recently bought a 1985 JCM 800 head. It was giving me an issue on the high input with the preamp cranked. I replaced the preamp tubes and it’s much better now, but there's still a whistle when the guitar volume is turned down. Before making further changes, I opened the chassis and noticed it has been modified. Can you help me understand what modifications were made and what could be causing the whistle? I've been learning a lot from reading this forum and I want to thank everyone. Thank you from Italy!