|
Post by flem on Sept 1, 2006 17:41:48 GMT -7
My maz jr wont produce any sound. The pilot light is on, the fuses are good, all the tubes light up and I swapped out all the tubes with known good ones, the guitar and cable work with another amp, the 210 speakers work with another amp, the amp wont produce any sound through another cab. I openned it up and the power/standy/pots/jacks are not shorted, there are no broken connections I could see and no burn or hot discolored spots. Does this amp shut down if it gets overheated?
|
|
robt
Full Member
Posts: 138
|
Post by robt on Sept 1, 2006 18:14:54 GMT -7
Rectifier tube, happened to me.
|
|
|
Post by nitehawk55 on Sept 1, 2006 18:31:21 GMT -7
I was going to say rectifier too . It is also possable the 1/2 watt fuse is no good but looks OK . I found a couple times looking wasn't the best way to test......use an ohm meter .
|
|
|
Post by 6strang (aka Paul) on Sept 2, 2006 7:54:02 GMT -7
Same thing with the Rectifier tube and the 1/2 amp slow-blow fuse or the 3 amp.(depending on the model) I stocked up at Radio Shack on the slow-blow fuses. Hope you get 'er back to normal. 6strang
|
|
|
Post by kledbet on Sept 2, 2006 13:38:20 GMT -7
The only thing I can add is that I don't think the pilot light wil come on if the fuse is blown. To be honest, just spend the money and buy a good old Mullard. Even a used one is probably good for 15 years. I put a very used Mullare gz34 in my Fender Vibro King that I had modded to use a tube rectifier... its going strong 4 years later. Current rectifier tubes are good for maybe 3 years. Current rectifier tubes sound ok, but they just don't last. Change them like you change the oil in your car. The last thing you want is for the rectifier tube to die in a performance... keep spare fuses on hand for the same reason.
|
|
|
Post by guitarboy02451 on Sept 2, 2006 18:34:01 GMT -7
sounds like the rectifier.... I've seen other posts on this forum with this same issue, all resolved with a new rectifier.
|
|
|
Post by flem on Sept 2, 2006 21:47:20 GMT -7
Measured both the 2A and .5A fuses with my ohmeter. The .5A fuse measrued intermitantly, thought it was just a bad connection on my test leads but I replaced the fuse anyway and the amp was brought back to life. The fuse must have blown in a wierd way to be intermitant. I've never seen that before. The rectifier is still going strong, maybe it was just a lemon fuse. Anyway my amp is up and running, and I couldn't be happier. If I could only have one amp in this world it would be this one.
|
|
|
Post by nitehawk55 on Sept 2, 2006 21:54:00 GMT -7
Thats great flem , I have had those fuses fool me a few times too . I think sometimes it's where they connect to the cap or they blow up in there where you can't see so thats why I use the ohm meter now , it doesn't lie . Anyway , glad you got it going ! ;D A karma for you to make your day even better !!
|
|