Search results

Or transformer I really mean

Probably but hopefully not in my PS

I have seen this same style 10 watt 2 ohm resistor on other people's JB2000 running off the 3 amp fuse holder going to the HV capacitor board, however there are several different models of JB2000 as we know. There are not any burnt traces on my HV board as I have already rebuilt it, and replaced...

I ordered about 4 of them since I have heard they run hot anyways, the shipping was more than the chip itself so might as well get extras

mine just had the solid core wires and that was it, is it a good idea to install the 10 watt 2 ohm resistor because if so I already have them, thanks

Mine did not originally have that resistor, I had bought some thinking i would put it there but haven't yet ! You mean the one that would have been coming off the 3 amp fuse terminal to the HV capacitor board correct?

These here would work wouldn't they TM86?

Driver board

She now seems to sit content all day as long as there is no plate voltage on the tubes now, but didn't necessarily seem like it before as it sounded like the amp would try to kick out the breaker even without the tubes installed. Rf choke, parasitic, and power supply have not been replaced

Wire was like this and I have removed it

Hi, I did try a couple caps in the vacant locations and it did not seem to make any difference at all. I do know that there is not any voltage changes on the outputs of the chip that I have the red pointer on when changing the channels, should there be ? I am guessing so. When I got this radio...

I have been back to messing with this thing after leaving it on the bench for quite some time over the summer. If I can figure out what is going on with it I will probably continue with the driver bypass but would at least like to see it functional first. It was my understanding that running the...

I understand the rules and wish to enter the contest

I am somewhat concerned now to why they were removed in the first place though, perhaps someone went to do a alignment on the radio and couldn't get it on frequency and there could be somthing else wrong, we'll find out in due time I guess

Hi, Gregg did get back with me and stated that there really isn't a exact set value of capacitor for these two areas but he said it is usually between 1-5 pf ,he said what I am doing is called padding the crystals to get it to where the two pots will adjust right to the correct frequencies. He...

This is the newer version of board also and I think the schematic

This is the newer version of board also and I think the schematic is the older one if that helps

Can anyone tell me or show me on the schematic what value of caps I should put in each spot, my eyes are having trouble tonight to see the small schematics lol

There is also a couple xtal pin isolator rings on a couple of the transistors there, not sure if they did that at the factory so the pins don't make contact or what.

Ok, here are my findings guys. I do have -8 bias on pins 24, 14, and 17. But I did discover this with my magnifier and I looks like it is missing a couple disc capacitors ! One of the photos here with the missing caps is my unit and the other is. Screen shot from another radio. Look where the...