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Motorboating in 41-295
Chuck Schwark
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#3

11-26-2010, 10:27 AM
Make sure you did not move or re-postion any grid or plate wires that could cause feedback in the audio stages. The audio circuitry in this set is not your simple AA5 type design and it's crowded in there.

Even putting a replacement cap or resistor in another location, relative to the old part's position can cause problems. If you replaced bad wires, they need to be exactly where the originals were. The new B+ bypass caps and new electrolytics should have taken care of power supply bypassing.

Also be sure you checked and replaced any and all resistors that are more than 20% vout of nominal value.

Chuck
Chuck Schwark,
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Messages In This Thread
Motorboating in 41-295 - by hyounce - 11-25-2010, 04:42 PM
Re: Motorboating in 41-295 - by hyounce - 11-26-2010, 12:05 AM
Re: Motorboating in 41-295 - by Chuck Schwark - 11-26-2010, 10:27 AM
Re: Motorboating in 41-295 - by John R - 11-26-2010, 12:53 PM
Re: Motorboating in 41-295 - by codefox1 - 11-26-2010, 01:17 PM
Re: Motorboating in 41-295 - by hyounce - 11-26-2010, 02:21 PM
Re: Motorboating in 41-295 - by hyounce - 11-26-2010, 02:34 PM
Re: Motorboating in 41-295 - by codefox1 - 11-26-2010, 02:49 PM
Re: Motorboating in 41-295 - by hyounce - 11-27-2010, 05:06 PM
Re: Motorboating in 41-295 - by Chuck Schwark - 11-27-2010, 06:14 PM



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