122: no signal to tubes, though speaker spinning

[Guest]

I just picked up a b3 and 122, having never owned either of these things before.. Didn't bother trying them out, as the price was too good to pass up even just for the wood ... </p>

The B3 seems to spin just fine, and i was assured that it was totally fine, but there is no sound. I know that power is making it to the Leslie, as the speakers are spinning, but the tubes don't seem to even be heating up at all..</p>

Is this potentially a faulty cable? Or perhaps a dead fuse? Tubes? All of the above? None of the above? Any tips would be greatly appreciated as i continue my research.</p>

Cheers!
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[Guest]

Re: 122: no signal to tubes, though speaker spinning



Funny because I did a repair call on a 147 this week. It was the EXACT same symptoms The client told me the fuse on the leslie Pwr Amp seemed fine. What he didn't know was that there is also another fuse INSIDE of the Amp. You have to take out all the wires plugged on the amp, take out the flat-headed screw in front of the amp and pull hard to take it out. Then look at the fuse inside to make sure it is good.</p>

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I'm not positive but I think the Leslie 122 is the same regarding this inside soldered fuse.
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[H_Keyz_85]

Re: 122: no signal to tubes, though speaker spinning



If the Leslie is spinning (I'm assuming it stays on fast speed) then
you at least know that mains voltage going to the amp, so the Leslie
cable should be okay. I have to agree with dwetmaster, check the fuse
underneath the amp. If it were the fuse in the front, the Leslie would
even power up period so you can rule that out. Something to keep in
mind. The fact that the fuse has blown could indicate another problem.
Not always the case, but just so you're aware.
</p>

</p>BTW, just out of sheer curiosity, how much did you pay the the B3/Leslie pair?

[Guest]

Re: 122: no signal to tubes, though speaker spinning



Hey, thanks both of you!</p>

I shall definitely be checking the
internal fuse sometime tomorrow, when i get back to it. Hopefully
that's the only problem, but if not, at least i have a starting point..</p>

I feel kinda bad saying how little i paid, considering the circumstances (friend's family member - health issues..) but suffice it to say that it was under 1000$ for the pair.. </p>

Thanks again! I'll post as soon as anything changes/if i discover some other problem...</p>

Cheers
</p>

[TheAdmiral]

Re: 122: no signal to tubes, though speaker spinning

Did you press down one of the preset keys on the left (the reverse colored ones)? It won't play without one on each keyboard pressed down, the exception being the C as it releases the others. The Bb and B keys make the drawbars operate. The others are set already (preset)..

[H_Keyz_85]

Re: 122: no signal to tubes, though speaker spinning

[quote user="ltrane"]

I feel kinda bad saying how little i paid, considering the circumstances (friend's family member - health issues..) but suffice it to say that it was under 1000$ for the pair.. </p>

[/quote]</p>

</p>

Haha, that was a steal! You really got lucky there. Unfortunately those deals are very few and a far between.
</p>

[Guest]

Re: 122: no signal to tubes, though speaker spinning



Yeah, i tried that.. I've used B3's/A100's in studios before, so i am somewhat aware of their operation.. This is the first i own, however, and therefor the first I have to be in charge of keeping operational.. !</p>

And yeah, i did get a killer deal. Though the reason for the deal is not the best..</p>

Cheers, guys.</p>

</p>

[johnny b3]

Re: 122: no signal to tubes, though speaker spinning



[quote user="dwetmaster"]I'm not positive but I think the Leslie 122 is the same regarding this inside soldered fuse.
[/quote]</p>

</p>

I've been under my 147 amp numerous times and have never noticed an internal fuse. I'm looking at the 122 schematic at the moment and can't see any fuse other then the 1.5A which is in the external fuse socket. What am I missing? something is fishy... If there happens to be an internal fuse you should expect to see a more serious problem with the amp. Internal fuses don't generally blow unless something is wrong with the amp. Then again you may get lucky. Amps of this age are about due for a service call anyway so do yourself a favor and send them (maybe the B3 preamp too?) to a tech. You got a sweet deal so i'm sure you won't be too upset seeing a few more dollars leave your wallet to ensure things are tip top. Its worth it after all, no? </p>


</p>

Goodluck!
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[TheAdmiral]

Re: 122: no signal to tubes, though speaker spinning



Adam:</p>"What am I missing? something is fishy..."

You're missing looking at a newer amp! [:S] The older amps (122/147) did not have internal fuses but the later ones do. One of several changes made along the way not always on schematics. Other models of older amps do have an internal fuse. Go figure.
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[geoelectro]

Re: 122: no signal to tubes, though speaker spinning



The point of the internal fuse is this;</p>

OMG! My organ's not playing and we go on in 5 minutes! Damn, the tubes in the Leslie aren't lit. "Check the fuse!" a band member says. Yeah, it's bad. Hey Johnny, (guitar player) you gotta fuse? "Sure" Johnny says, here ya go.</p>

POW! SMOKE! Hmm.. perhaps putting a twenty amp car fuse in an amp with a shorted rectifier is a bad idea.</p>

Hence... the internal fuse. Whew!</p>

Geoelectro
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