LGB JUMBO TRANSFORMER

[franks]

Does anyone have a wiring diagram for a jumbo transformer, or know where the transforner wires connect to the circuit board, also the wires from the Amp and, Volt meter connect to the board?  I have tried every lead suggested  and, nothing. I figured I would try here. Thank you.

[rrinker]

 I don't have specific info on this item, but general troubleshooting hints. If you are attempting to repair this because the wires broke loose from the circuit board, it should be fairly easy to tell where they belong. If it's not actually labelled, you still should be able to carefully look at the solder side of the board and see the holes with solder and a bit of wire in them left over from the break. If it's the AC input before the rectifier it won't even matter which way you connect them, but be sure of that because if it's DC input after the rectifier, hookign it up backwards could dmage the whole thing.

 ANd my standard warning, if you really don't understand this stuff, DO NOT try messing around with it. Unless the power supply is an external 'brick', the 120VAC enters into the case and is plenty to be lethal. And as I recall this is a rather large amp capacity power supply, so miswiring even the low voltage side can generate enough heat to potentially start a fire.

 I'm not trying to scare away anyone who wants to learn about electricity and electronics - just pointing out that you need to be VERY careful especially where house current is potentially involved. Playing around with electronic components at 5-12 volts might let the majic smoke out of some components, but it isn't going to hurt you. Playing around with 120VAC or more might let the magic smoke out of YOU. I say these things becuse back when I was younger and didn't have much experience with electicity and eelctronics (pre high school years) I often learned the hard way - and was generally quite lucky that the few times I DID get shocked it wasn't across my body (and thus my heart). The worst being when messing around with an old broken tube radio and my hand slipped from tthe insulated handle of the screwdriver onto the metal shaft. While standing on a bare concrete floor. I was literally paralyzed and couldn't even call out for help even though I could see other family members just a few feet away outside the window. My shaking eventually caused the screwdriver to slip off the contact point and I was finally able to let go, but that is without a doubt the scariest moment of my life.

                                                  --Randy

 

[franks]

Thank you Randy, However, I bought a new transformer for the Jumbo, When I purchased the Jumbo  there was no transformer inside. Someone took it apart, took out the transformer then, put it back together, I was able to buy a new transformer from Silvergate before they sold out to a higher power. Anyhow, I don't want to put the wires on the wrong terminals on the circuit board there are many empty spade connectors and none of them show power terminals like a T1 or T2 or L1 or L2. Putting the leads from the transformer on the wrong spades will burn out that board, then I will really be sunk. Thank you, Frank.

[two tone]

Hi Welcome to the forum, it may help you if you put on your bio where you are based. The reason for saying that is you may find there is some one local to you that can help or may be able to look in side thier unit and tell you what goes where     Hope this helps

[Greg Elmassian]

If all else fails, some high resolution pictures of the circuit board might help.

Maybe the "collective brain trust" here could figure something out. Worth a try.

Regards, Greg

[ttrigg]

I did a google search for "lgb jumbo transformer" and found a few diagrams.  Try it with the LGB item number, you just might find what you need. Good luck!

[two tone]

Hi    I tried all avenues over on my side of the pond but it seems that there is not a circuit diagram for this unit even LGB do not have one to down load      Sorry can not be more help