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#2898408 - 12/28/17 06:26 PM Re: Feel free to ask Myles [Re: BadLife]
myles_rose Moderator Offline
MP Hall of Fame Member

Registered: 11/28/01
Posts: 5042
Loc: Los Angeles CA, UNITED STATES
Do you know if V4 is good? Start with that tube.

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#2898409 - 12/28/17 06:28 PM Re: Feel free to ask Myles [Re: CEB]
myles_rose Moderator Offline
MP Hall of Fame Member

Registered: 11/28/01
Posts: 5042
Loc: Los Angeles CA, UNITED STATES

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#2898416 - 12/28/17 07:08 PM Re: Feel free to ask Myles [Re: myles_rose]
BadLife Offline
Gold Member

Registered: 02/01/06
Posts: 647
Hum is that the 7025 which is 4th from the right looking at the back of the amp or the 12AT7? The 7025 was bad and I replaced it. Before I replaced it the amp was going crazy when the vibrato was on.

That tube was the original as the one installed during the rebuild was bad. It was all frosty looking and the vibrato channel did not work at all if I remember correctly.

I need to order some new Preamp tubes anyway as I have several tube amps as well as two I built from scratch.

I don't get why it goes away at full intensity.

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#2898585 - 12/29/17 09:15 PM Re: Feel free to ask Myles [Re: BadLife]
myles_rose Moderator Offline
MP Hall of Fame Member

Registered: 11/28/01
Posts: 5042
Loc: Los Angeles CA, UNITED STATES
V1 is farthest from the output tubes. Count from there.

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