hi, im going to be receiving a klv 400 soon from my friend and it has a issue when he was trying to replace a fuse he touched the metal part of the screwdriver against the side of the box and the fuse at the same time and he said sparks flew I just want to know if the shorted out the fuse or what could be wrong with I want to get it up and running again as of right now it doesn't work I don't know if I doesn't do anything at all or what just need to diagnose the problem.
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KLV 400
- Thread starter Youngblood
- Start date
He was already trying to replace a blown fuse when he grounded the positive wire? Sounds abused but there are some good techs on here that can fix anything.
i dont know hammer but all i know is he tried to replace the fuse and while touching the new fuse he touched the box also and ill relay the information to him rob thanks!
If you really want this amp and it's more trouble than it's worth for about the same price you can get a KL-503 try Amazon or IOFFER or try them for an other 400
he is giving it to me no charge because he has a lot of things but he is thinking he might have shorted the tubes is that a possibility he said he was having problems blowing fuses but its because deadkey was to high and now that shock thing happened and he thinks he shorted the tubes out is there any way to test them without having a tester?
My mistake; I thought this was a KL 400 solid state amp.
I would take the tubes out of it first, put a fuse back in it, turn it on, and see if still blows the fuse. Test the tubes if you can find a place that has a tester. But unplug it before you do any of this. It is risky business working on a tube amp; I would not recommend working on it if you have never done it before!
I would take the tubes out of it first, put a fuse back in it, turn it on, and see if still blows the fuse. Test the tubes if you can find a place that has a tester. But unplug it before you do any of this. It is risky business working on a tube amp; I would not recommend working on it if you have never done it before!
have come to discover on a different forum that the tubes might have been shorted neither of us have a tester so how can you tell if it is shorted
A tube tester would be the easy way if you can find one; that isn't so easy to do any more.
You might also find the pinout of the tube (EL519?) and use a ohmmeter and see a short that way. The heater element is the only short you should see, IIRC.
You might also find the pinout of the tube (EL519?) and use a ohmmeter and see a short that way. The heater element is the only short you should see, IIRC.
Sounds like Youngblood's friend is lucky to still be on the right side of the grass. Almost sounds like he was working on the amplifier with it still plugged in. Hope not...
As far as testing the tubes without a tester, you can check the continuity of the filaments/heaters with an ohmmeter but that's about it. And for that you'll need to look up that particular tube and see which pins are supposed to have continuity and which not.
As far as testing the tubes without a tester, you can check the continuity of the filaments/heaters with an ohmmeter but that's about it. And for that you'll need to look up that particular tube and see which pins are supposed to have continuity and which not.
That pinout should help some . . . I recommend that you find a tube tester and see if they test OK.
DO NOT even try to check the voltages. Turn off the power and remove the tubes.
Oh yeah, if/when you get it fixed remember to use these input specs:
RM KLV 400
1926-1930 MHz AMPLIFIER VALVES RED PL519 200W x 2
Linear amplifier tube (PL-519)
Frequency range 26 / 30 MHz
Supply voltage 230V AC 50 Hz
Input Power
3-10 Watt AM-FM
6-20 Watt SSB
Output power
100-250W AM (pep)
200-400W SSB (PEP)
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The tubes are upgraded to EL-509 he tried to test it again he said he checked the fuse and it was good so hooked it up to the cobra 2000 and said it keyed up but 0 output
I thought you were talking about a RM ITALY amp KL-400 a new mobile amp. disregard whatever I said.