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| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Maybe I need another 'scope?
On Mon, 19 Nov 2018 23:02:22 -0500, Ralph Mowery
wrote: In article , says... Most tube amps are serviced in our shop with a digital voltmeter...not a scope. Really all that you need to know are correct are the plate and cathode voltages, and if they are off then you check the screen and grids for proper bias - after testing the tubes for proper operation. I agree. Forget about the scope if you want to just measure voltages. I have the same scope and would never try to make accurate voltage measurments with it. You can always get a 100 to 1 probe. However, you can get one of the 'free' Harbor Freight meters and do better for what you want. For just DC measurments you can just make your own 100:1 voltage devider. Thanks Ralph. Eric |
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