Marshall amplifier? electricians? fuse?
so i asked the guy at the music store i go to and he said it be probably the fuse, so my question is--- is it thorny to replace and where would it be located contained by the pictures i have provided.
thank you especially much.
http://s135.photobucket.com/albums/q150/...
Answers: first of all...your pictures are too low resolution and blurry for me to be capable of tell much...i can speak about where the fuse is. In picture24 it can be see on the side of the board..almost in front of the transformer..it is the little cup tube in metal clips. contained by the photo where the black and white wires are running toward the front..it is right underneath the white cable tie.
however, don't merely go varying it..if it pops again after changing it, consequently you've got a bigger problem..if that fuse doesn't fix it, after you've also got a bigger problem
you said it made a "gurring" echo and turned off....that to me sounds really much like a component poor...and when the component failed...it imagined took something else with it. that looks close to a solid state unit....if i be to take a guess..you predictable had an output transistor short out...hence the gurring thud.
this is not something you can fix yourself..unless you have a setting in electronics. you may call for to take it to a repair shop.
but rework the fuse ONCE...if that doesn't fix it (which i seriously suspect it'll just pop again), next don't keep putting fuses contained by it, you'll do more damage to the circuit.
I'm an electrician (yes I'm a chick) & my b/f have a Marshall JM 700 (i think to be exact the correct model) so i'm interested...
What is the model #?
Electrical drawings may be available on the net...that might relieve to locate the fuse...I can't see ur pics very all right but you should be looking for a plastic fuse holder, it's probably small, & is probably around where u are already looking...i would regard as it will be a glass fuse and the rating will be written on it so u know what to replace it next to...the fuse will definitely be the first item to check...if u do get to replace it & it blows again, that signals a bigger problem somewhere...check adjectives ur connections & give it a blow out next to some air if u can...near are loads of components in those things...near are transformers, power supplies, transducers, the tubes etc...it could be anything....i want to look at it now! I love fixing things! Send it to Australia & I'll help yourself to a look! You may need someone to purely turn it on, start from the point of supply & follow the voltage with a multimeter until it drops sour somewhere...u either enjoy an open circuit (loose or broken nouns or failed component) or a short circuit which will indicate a blame...does it have a peculiar smell? An electrical burning smell is intensely distinct...look for any burn marks where on earth it's gotten hot...
The gurring noise is especially suspect. This makes me get the impression like it might a short time ago be the fan to be precise the source of your problem; it's possible that the fan motor is broken or otherwise stuck so the electric motor inside sink too much current and that blew your fuse, thereby cutting sour power to the rest of your amp. If the gurring noise be a short duration, it could also have be other components blowing. If there be burning smells or some other such thing, I would expect that you may enjoy burnt a solenoid or power circuitry that can capture quite hot (but I expect this is not the shield; it sounds like you didn't enjoy it on for very long previously it blew but it's still possible it burned last time you have it on for a long time).
I looked at the pictures but they are very blurry. I would own to agree with the above post, the fuse is ALWAYS located (in a obedient design, anyway) near the power input jack and is typically a small cup tube with metal cap on the top and bottom. You should try replacing the fuse, which shouldn't be TOO hard to find/order from a local electronics store, but I would also use a vacuum and/or blow dryer on the amp (FROM A DISTANCE!) to verbs it a bit. If you do replace the fuse, you might want to disconnect the fan earlier connecting the power to the amp (if you can disconnect the fan lacking damaging any connectors). If it works similar to that, then power it posterior down and re-connect the fan. If it make the gurring noise and dies again, next you can try replacing the fan. Beyond that, I'd lately buy a new amp.
To acquire another fuse, you can go here:
http://www.mouser.com/search/Refine.aspx...
or here:
http://www.allelectronics.com/cgi-bin/ca...
If you replace the fuse and that doesn't fix it, you'll involve to get your amp fixed or replaced.
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