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Post by dizeased on Feb 1, 2007 12:58:11 GMT -7
Hi all -
I'm new here and recently purchased a used Maz Sr. 38 NR and had a rare moment to actually play with it. I was switching footpedals around and plugged them back in and...no sound. Power light is on, tubes appear to be lit up...but no sound.
I saw the "No sound - thread" posted earlier by stratosphere so I exchanged the Rectifier and checked the fuses and they appear to be o.k. Sorry for the naive question here, but are the fuses for Dr. Z's supposed to be slo-blo type or regular?
Other than a trip to the shop, any other suggestions. I may replace the power tubes with a spare set I have, just to check and may replace the fuses anyway.
Thanks in advance for any input.
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Post by kledbet on Feb 1, 2007 14:20:30 GMT -7
Since you have tried the rectifier tube, now change each of the pre-amp tubes out 1 at a time. Then try exchanging the power tubes as a quad. It is possible that the fuses have gone bad even if they don't look like it... I think they are slow blow so replace them... its cheap. If all this fails you might need a tech, but for 90% of what goes wrong with tube amps, just check the tubes and fuses.
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Post by dizeased on Feb 8, 2007 21:33:46 GMT -7
Thanks, kledbet.
I finally got around to messing with the amp again and I should have started with the fuses as you suggested. I e-mailed Dr. Z and FYI, he said the 1/2 amp is a slo-blo, the 3 amp is a fast-acting type. I changed out the 1/2 amp fuse and that solved the problem. He surmised that it might be the rectifier as often seems to be the case in other threads I've seen.
Thanks for your help.
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Post by propellr on Feb 9, 2007 6:24:29 GMT -7
FYI to others who may have fuse problems-- I had 2 amps B.Z. (Before Z) and spent a grand total of $120 on having them both serviced b/c one of them kept blowing fuses within 5 seconds of turning it on and the other hummed terribly-- The tech told me he checked them out and spent some time walking down memory lane playing through my old silverface Princeton Reverb. The amps checked out fine-- the problem was the electricity at my house-- not enough current was coming into the house from the transformer. One quick call to the power company and problem solved.
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Post by guitarboy02451 on Feb 23, 2007 6:37:55 GMT -7
Or, get a Furman power conditioner.
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