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12-22-2023, 01:18 AM
Picked up a Peavey VK100 recently for cheap 'cause it powers on but doesn't make sound. Starting this thread now for me to log my progress fixing and hopefully later improving it. I checked before buying, and it looks like there is plenty of room inside the chassis for future mods, the board isn't too crowded to work comfortably on, and it's not a huge pain to get out. It is single-sided though. Maybe I'll install some eyelets in the through-holes to remedy that. Some spots on the board may be a bit tight for that though. Anyhow...
First issue: no sound. Tried different inputs, tried different channels, tried a patch cable in the fx loop, tried going direct into the effects loop return, nothing. Next I tried checking for signal coming out of the FX send, but at that moment my scope which I was hooking up to the other end of the cable decided to go for a smoke break, so I'm going to fix that first then resume troubleshooting the VK100 in between rebuilding a Bogen PA for a friend.
First planned upgrade: 1k 5W screen resistors. Stock it comes with 330R 2W resistors. I wonder if the screen resistors have gone out to lunch, and that's why the amp is silent.
Second planned upgrade: threaded inserts for the front and back panels. A previous owner thought self-drilling screws were a bright idea when they replaced the stock front panel with diamond plate, and my efforts to secure all the screws on it, not just the bottom two, did several of the holes in
. Something to deal with after the electrical issues are sorted. Maybe before, depending how annoying it gets it deal with.
First issue: no sound. Tried different inputs, tried different channels, tried a patch cable in the fx loop, tried going direct into the effects loop return, nothing. Next I tried checking for signal coming out of the FX send, but at that moment my scope which I was hooking up to the other end of the cable decided to go for a smoke break, so I'm going to fix that first then resume troubleshooting the VK100 in between rebuilding a Bogen PA for a friend.
First planned upgrade: 1k 5W screen resistors. Stock it comes with 330R 2W resistors. I wonder if the screen resistors have gone out to lunch, and that's why the amp is silent.
Second planned upgrade: threaded inserts for the front and back panels. A previous owner thought self-drilling screws were a bright idea when they replaced the stock front panel with diamond plate, and my efforts to secure all the screws on it, not just the bottom two, did several of the holes in
. Something to deal with after the electrical issues are sorted. Maybe before, depending how annoying it gets it deal with.
