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LIttle Dot I+ Problem

post #1 of 7
6/12/11 at 9:14pm
Thread Starter 

Hey guys, so I have a Little Dot I+, not really sure what happened, but I blew two of the blue things I think.  What should I do. Is there anywhere or anyone in the US that I can or should send it to?  Or do I have to send it all the way back to China?

P1010921.JPG

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post #2 of 7
6/14/11 at 4:58pm

Did you own this amp for a long time? Did you change any settings that might have caused this problem?

You blew out the resistors, which means that there is some sort of overload wattage happening here. 

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post #3 of 7
6/14/11 at 10:14pm

I noticed that you have the switches set for 408A tubes  and that requires a much higher heater voltage about 20v  than most pre-amps tubes use. If you left the switches at 408A and changed the tubes to something other than 408A it is more likely that the resistors will blow.

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post #4 of 7
6/14/11 at 10:22pm

You might try posting over in the DIY forum.  They can give some advice on you doing a repair, or someone might offer to assist.

 

x3 on the "did you change the tubes without changing the jumpers" question.

 

 

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post #5 of 7
6/15/11 at 2:30am
What I'd do in any case is send this picture to Little Dot along with how it might have happened.
They will probably send you resistors for free, if it's within warranty range.

You will need a soldering iron to do the fix though.
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post #6 of 7
6/15/11 at 4:58am
Thread Starter 

Yea I was looking at it again and I had the stock pair of tubes, the 6ji's, in it instead of the 408a's I thought I was using lol.  My fault.  Anyway, it's out of the warranty period.  I'll talk to DavidZheZhe to see if I might be able to get some more resistors and I'll try in the DIY section too

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post #7 of 7
6/15/11 at 11:13am

You also may be able to find the resistors at Radio Shack if you decide to go that route. The 408A tube is a bit unique in heater voltage. That is the one jumper or switch in your case that could damage the Little Dot if set wrong. The other jumpers may not cause that type of damage.   

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