hopjohn's Recent Activity

  1. hopjohn replied to the thread The KA-9100 restoration..

    Phase one of the restoration is completed. The control boards, small switch boards, diode boards, were all cleaned of flux and...

    Sep 20, 2017 at 1:53 PM
  2. hopjohn liked SkyRanger's post in the thread Kenwood Owners Show Us Your Kenwoods!.

    A lightning caused power surged blew out two transistors on my 7100 shortly after I received it. Thanks to hopjohn and rbuckner, it's...

    Sep 20, 2017 at 7:06 AM
  3. hopjohn replied to the thread The KA-9100 restoration..

    Addressing the KA-9100 Service Bulletin There is a small 3-pin header on the top control board which is subject to strain from the...

    Sep 19, 2017 at 2:14 AM
  4. hopjohn liked SicMan's post in the thread The KA-9100 restoration..

    Hey John: Good idea. I used some very thin weather stripping in a bind or similar to what you are using. John M

    Sep 18, 2017 at 2:39 PM
  5. hopjohn replied to the thread The KA-9100 restoration..

    The foam used in these 70's Kenwood's is always starting to dry rot. I make a point to remove it because if you don't it begins to...

    Sep 18, 2017 at 5:56 AM
  6. hopjohn liked gort69's post in the thread Kenwood 6600 Mysterious Part.

    Thanks John - learnt sumthin'!

    Sep 17, 2017 at 1:23 AM
  7. hopjohn replied to the thread Kenwood 6600 Mysterious Part.

    Seriously, it's a real thing, They were needed because auto insertion machines couldn't do jumpers. Edit: Let me clarify. There were...

    Sep 16, 2017 at 5:02 PM
  8. hopjohn replied to the thread Kenwood 6600 Mysterious Part.

    A zero ohm resistor.

    Sep 16, 2017 at 3:49 PM
  9. hopjohn replied to the thread The KA-9100 restoration..

    In my best southern draw : It ain't purdy, but I rectum it'll get the job done. Duct tape, bailing wire, and a rock fer a hammer 'bout...

    Sep 15, 2017 at 4:13 PM
  10. hopjohn replied to the thread The KA-9100 restoration..

    The four main filter caps of the KA-9100 are solder tab type. It seems the only drop in replacements are Nichicon Gold Tune which cost...

    Sep 15, 2017 at 11:14 AM
  11. hopjohn replied to the thread The KA-9100 restoration..

    The meter board has two general purpose 47uf 10v electrolytic caps that were replaced with a couple of Panasonic FC 47uf 25V. The eight...

    Sep 14, 2017 at 9:49 PM
  12. hopjohn replied to the thread Another Kenwood KA-5700 Recap & BOM.

    A small one of these does wonders for holding pins/leads while you solder. No bending, no BS. [IMG]

    Sep 13, 2017