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Post by muzicmaken on Apr 7, 2014 17:14:32 GMT -7
Hey gang...
I used my Ghia this past weekend at a show (2 nights) had no problem
Today when I went to turn it on it wasn't doing anything...So I looked in the back at the tubes,
All were lighting up except the 5Y3S. Could it be just the 5Y3S tube?
wanted to try it out on my new Z-Wreck cab but couldn't, thanks for any help
Ken
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Deleted
Deleted Member
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Post by Deleted on Apr 7, 2014 17:17:21 GMT -7
Rec tubes don't light up bright like power tubes.
It is possible none the less.
How old are the tubes in general?
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Post by muzicmaken on Apr 7, 2014 17:36:01 GMT -7
Not sure how old they are the head is a 2013 and I just got it used
last week...It was fine this past weekend no problems with it
at all
Ken
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Post by Jaguarguy (Mike) on Apr 7, 2014 17:45:43 GMT -7
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Post by muzicmaken on Apr 7, 2014 18:09:04 GMT -7
Thanks Jaguarguy Mike,, I'll look at that
thanks
Ken
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Post by muzicmaken on Apr 7, 2014 18:40:01 GMT -7
Tried the trouble shooting, still nothing....I will order a complete set of new tubes tomorrow and replace them when they come in, If that doesn't work then I guess it will have to go for a DR's appointment  Ken |
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Post by muzicmaken on Apr 8, 2014 10:46:21 GMT -7
Took the tubes to a buddy who ownes a repair shop and he tested the tubes... It was the Rectifier tube that was dead...Pop'd a new one in and she's good to go...Sounds REAL good with the Z-Wreck cab.... Ken |
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Post by wubberdubber on Apr 8, 2014 12:57:16 GMT -7
Ken,a note for future reference: a bad rectifier still lets the pilot light come on, but there will be no sound whatsoever from the speaker.
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Post by muzicmaken on Apr 8, 2014 13:33:14 GMT -7
Thanks Mike...That's exactly what the case was...I had to go to Felty's and he just happened to
have the 5y3....Just don't know what happened between Sat night and yesterday though..
thanks again
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Post by mikethebike500 on Apr 16, 2014 17:56:47 GMT -7
Thanks Mike...That's exactly what the case was...I had to go to Felty's and he just happened to have the 5y3....Just don't know what happened between Sat night and yesterday though.. thanks again very possible nothing inparticular happened........had Z amps where the stock rectifier lasted for years, then cut loose....replace and ROCK!!!! |
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51d
Junior Member
Posts: 95 
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Post by 51d on May 3, 2014 11:15:47 GMT -7
I recently chewed my way through two fuses in swift succession on my Ghia 25th anniversary head (black, 11/50: pictures soon). I would turn the amp on, and there would be nothing - no valves lighting, no pilot. OK, so down to Maplins to buy new fuses; slotted one in and the new fuse failed immediately; very brown indeed when removed.
This was a new experience for me with any valve amp (and I've had many over the last 40 years), but taking out all the valves and replacing the lot with what spares I had to hand seems to have sorted the problem; threads elsewhere seem to suggest it's the rectifier that might be the guilty party's this case..my favourite 5Y3 is the Phillips JAN type. Great in my silverface Vibro Champ, and Lonestar Special; these are beautifully built valves.
BTW, in the UK Dr Z amps are supplied with power leads which look as if they could feed the National Grid; these are really big and brawny compared to the usual kettle leads. Is there the remotest possibility that these might be responsible for some kind of power surge that blasts the fuse to oblivion? I have no grasp of the physics of electricity, but if anyone is wise to this possibility, it would be interested to hear more...
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