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| Help needed with tube amp diagnosis http://diyaudioprojects.com/Forum/viewtopic.php?f=9&t=6394 |
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| Author: | tubetinkerer [ 12 Nov 2018, 17:18 ] |
| Post subject: | Help needed with tube amp diagnosis |
hello everybody I am new to the forum, and please forgive me if I have posted this in the wrong part of the forum. Anyway recently I have converted (Ish) a fidelity tr5 twin track reel to reel to a guitar amp. I have replaced all the leaky caps etc, soldered in some input jacks, and it sounded great, no problems. then about a week later, when I played it, it sounded robotic like when I played the guitar, all the controls affected it (that being volume and tone). There was no noise or anything when I didn't strum the guitar. So I re soldered all the connections in the amp, cleaned the tube sockets and the tube pins. It still did the same thing, so I switched out the tubes and it didn't make a difference. Could anyone help me fix this? |
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| Author: | turk 182 [ 09 Apr 2019, 10:39 ] |
| Post subject: | Re: Help needed with tube amp diagnosis |
if the R/P bias oscillator was not removed that could be where the sonic weirdness is coming from!? i take it that mechanical components like the tape heads have been removed? and eliminating or bypassing the R/P switching would also be in order...but that one looks like a chore... |
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