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isaac42

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  1. Didn't kmow you were a Ric man, Mikeo.
  2. I have a Midnight Blue 4003 and a Midnight Blue 330/12, both with black hardware and trim.
  3. Yes, that's possible. Mains voltage is higher than it used to be, and the power supply mod raises it a bit more. OTOH, it worked fine for ten years or so.
  4. Went well. I received the bag o' diodes on Wednesday (I don't expect I'll ever need to buy any more!). Thursday, while my lovely wife was out, I pulled the old diodes and tested them: one good, one shorted. Replaced both diodes, because why not? Fired up the amp in standby: no blown fuse! Replaced the tubes, and turned it on again: so far, so good. A quick note here: it's often a bad idea to power up a tube amp without the tubes in place. The reason is that the tubes bring down the voltage by drawing current. Without them in place, the voltage can be too high for the filter capacitors. I admit that I've done it before, and got away with it, but I don't recomment it. In the case of the 200S, and all Sunn amps of that vintage, voltage is not applied to the caps when the amp is in standby. Hit the standby switch, and was treated to a dazzling light show from one of the power tubes! Killed the power, but blew another fuse. Replaced the fuse and switched the tubes around, figuring that, if it's a problem with the amp, I'd get the same result with a different tube. If the problem was the tube, then the problem should move with it. Instead, everything appeared to be fine. At this point, I'm thinking that the tube was bad, and burned out when I powered it up. Gig tomorrow. After, I'll replace the power tubes and test the amp on a bass speaker.
  5. I think I may have found the problem with my Sunn 200S. Some weeks ago, after band practice, I flipped the Standby switch, and the fuse blew. Replaced the fuse, and it blew again. Finally got around to doing some troubleshooting, but everything seemed good, until I turned it on, and it blew another fuse. But I think I have it now: bad recitfier diode. "Bad diode?" you ask. Yes. I did a mod some years ago, replacing the rectifier tube and power supply caps with a SDS Mk3 capacitor board. Gives the amp a bit more power, eliminates sag (good for bass, not so good for guitar, IMO), and results in a quieter, cleaner amp. But not so good if a diode goes out. I think what's happening is that a diode has shorted, and shorts out the main transformer secondary winding, drawing too much current and blowing the fuse. We'll see. New diodes arrive tomorrow.
  6. And the "musicians" are DJs.
  7. That sounds about right, Grumpy. I remember working as an intern in a hospital when things really went south with the new software. That would have been in 2010.
  8. Years ago, a band I was in tried the egg carton thing. Didn't help much, if at all.
  9. Why, yes. Yes, it is a post.
  10. Also, this might be better addressed in the keyboard forum.
  11. That might depend on how you define 'going'.
  12. I'm going to set the record player aside. I seem to be stuck, and higher priorities have come up, such as my Sunn 200S.
  13. I have obtained pickups for the electric deck!
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