Hi Michael, Sorry to hear of your problem with the L-4PS burning. To answer your question, I did the Heathkit Shop L-4PS upgrade to my L-4B just about a year ago and I highly recommend it. It replaces all of the L-4PS components except the transformer, breakers and the 50K 50W bleeder resistors. If you want to see how it is done, check out this site:
http://www.churchfieldracing.com/K3HK4/L4B_PS4.html Good luck on the upgrade. 73, Tom, W1CC On Wed, Feb 23, 2011 at 8:23 PM, Michael & Sue Trussell < mtruss8...@comcast.net> wrote: > Just as I have heard all the stories of power supplies being destroyed, my > L4B power supply did just that. Turned on the amplifier just like I always > have heard a big bang and looking to find the noise and then saw the fire. > Turned off the L4B and removed the 220 volt plug from the wall just in time > to see my power supply burning. I then carried it outside until the fire was > out. I had planned to upgrade the power supply but now it’s got to happen. > > I would like to ask about the Heath Kit shop, power supply module upgrade. > Has anybody used this unit? When this unit is purchased does this unit > replace both sets of 220uf 450 volt old yellow caps and all the resistors > and diodes? > > > > Any comments, ideas, or suggestions would be appreciated! > > > > Thank you > > > > Michael J Trussell KA8ASN > > > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist > > -- Please note the new email address: tom.del...@gmail.com
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