1. You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
    Dismiss Notice
Dismiss Notice
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.

Heathkit SB 200

Discussion in 'Amplifiers' started by Randall barton, Jul 24, 2021.

  1. Randall barton

    Aug 9, 2017
    Likes Received:
    I have a SB-200 and without going into a lot unnecessary detail it had a power surge with the power was shut and turned back on. I rebuilt the power supply board (from Jeff Harbach) beacause that is what he said was wrong when it wouldn't even light the meter up. It still didn't come on, so my question is what else could have been knocked out with this power surge? thanks for all the help in advance

  2. nomadradio

    nomadradio Analog Retentive

    Apr 3, 2005
    Likes Received:
    The transformer's primary winding, circuit breakers, power switch and power cord are all that's left to blame.

    A check of continuity across the prongs the plug at the end of the power cord will show if all those elements are in the circuit when the power switch is on.

    And if you get no continuity, one or more of those parts of the amplifier's power supply have taken a hike. Circuit breakers don't last forever. Especially when they get to be 40-plus years old. That surge could have assassinated one or both of them. Power switch is also subject to surge damage.

    tecnicoloco likes this.

Share This Page

  • About Us

    The WorldwideDX Radio Forum was originally established in 2001. We pride ourselves on welcoming Radio Hobby enthusiasts of all types, while offering unbiased, informative, and friendly discussion among the members. We are working every day to make sure our community is the best Radio Hobbyist's site.
  • Like us on Facebook

  • Premium VIP Member

    The management works very hard to make sure the community is running the best software, best designs, and all the other bells and whistles. Care to buy us a beer? We'd really appreciate it!

    Donate to us!