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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Thup-thup-thup and static coming from my power amp posted by Wilbur Pan on December 12, 2016 at 14:17:41:
R54 is a cathode resistor and can be damaged if it gets overheated - one way this can happen is if the tube loses bias and passes excessive current.
Is the noise in both channels or just one? That will help to narrow it down.
But as soon as you finish posting the answer to my question go thoroughly CLEAN AND RETENSION THE POWER TUBE SOCKETS! Or replace them if they are worn out or damaged. Poor pin-to-socket contact could be the cause of the resistor problem and the noise!
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- RE: Thup-thup-thup and static coming from my power amp - Jim McShane 15:46:21 12/12/16 (0)
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