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Vacuum tubes DO NOT FLASH or spark inside. That is not normal.
Service to ALL tube amplifiers,
ALL Electrolytic capacitors should be replace. ALL other capacitors that are NOT DISKS need to be replace too. These caps in particular will destroy tubes and transformers when they fail. Check ALL tubes in a tester, and replace any marginal ones. Make certain that you test them for HK leakage. 6973's will normally have some leakage, but still work fine in a Seeburg. It would really help if I knew what model you were working on.
Tubes run hot in order to function. They degrade over time unlike transistors which usually work or don't work.
You should keep some spares around especially if you are out doing gigs.
Guessing at which tube is bad will be expensive.
With the renewed use of tubes in amps, there may be some tube testing available at a music store. Call around and see. Pull all you tubes and go test them.
First of all, there shouldn't be any fluid in the tube. This switch works on air pressure that is generated when you push on the sink button. The tubing that came with this is black, did you change the tubing ? If the tubing that is on there has a hole in it or isn't fastened correctly, it wont work properly. Secondly, check your plugs. The insinkerator plug should be in the outlet and your disposal should be pluged into it.
To remove the tube, it just pulls off both ends that its connected to. They are just push on fittings and do not actually have a nut or something to connect it. Get the fluid out of the tube and reinstall.
That thing has tubes and tubes are hard to find,first thing is to blow it out cause those tubes need air and dirt is the constant enemy,Built up dirt will kill them ,its a tube that isn't working and with out a tube tester it will be difficult. I would take to someone that is a old radio enthusist working on those things is a lost art and the tubes aren't made anymore so this one will be a challenge .The radio guy will help you out in those areas cause I bet he has a source, You might have to invest some time and money to get it to work,but the payback will be worth it
Not knowing which of the tubes in the unit you are talking about we can't give you help. Usually a "pair" is used for the power output tubes like the 6L6's, but this has 12AX7's as well.
If you are talking about the 12AX7's, they have TWO sections in each tube, and depending where you swapped them, one section could be out and the unit APPEAR to work, although there would likely be some feature that did not work properly.
IF the ones you swapped are the big 6L6's and one way works and another doesn't, you have BIG problems possibly involving blown output transformer and one blown tube.
The dip stick tube is pressed into the engine block. Put a bolt into the top of the tube so that the body of the bolt goes into the tube and the bolt head rests on the tube (so it does not fall down the tube). Use a wrench (such as a Vise grip) to hold onto the tube at the bolt and gently work it back and forth, being sure not to deform the tube. Remove the tube and old dip stick. Replace the tube by forcing it back into the eng. block. Replace the dip stick - done :)! Some dip stick tubes have a gasket at the engine - others just **** up to a shoulder that is built into the tube. Let me know if this works. Thanks.
On mine the water inlet feed tube would freeze solid. Removing the ice tray and using a hair dryer to completely thaw the tube would get it working for another month or so. My frig had a solid rubber inlet tube. I noticed at the appliance store that newer models had an inlet tube that was split on top. I got one of these from a local appliance parts store, and it fixed the problem. The tube replacement it easy. Get to the back of the frig. Turn off the water supply. Carefully pry the white plastic piece out ( located on the upper right side when facing the back of the frig. ) of the frig. When you have the new one in hand it will be clear what you are going to do. Pull out the old remove the water line. Attach the line to the new tube and insert it. Turn on water, check for leaks, and you should be ok. This repair is only effective if you have an inlet tube that freezes up. There can be many other malfunctions that stop ice makers from working. This was my problem. Replaced the tube 3 years ago and ice maker has worked fine since the replacement.
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