Dieter Horst <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- Bill,
have you ever tried transmitting into a dummy load just to make sure it is not excessive RF in your shack causing the PS-7 to go wild? 73, Dieter DL5RDO > "Bill Carpenter" <[EMAIL PROTECTED]> made an utterance to the drakelist gang > ---------------------------------------------------------------------- > I'm still struggling with the PS7. I've replaced the 723 twice, the zener > diode and the caps seem to be OK to me. The supply works and the voltage > adjusts fine but voltage decreases starting at only about 5-10 watts > output > and shuts the PS7 down. I seem to be going backwards as it would go to > about 40 watts before and shut down. I'm a technical dummy so simple > explanations please - if possible :) > ANY help greatly appreciated. > ----- Original Message ----- > From: "Ron Wagner" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, June 11, 2007 8:50 PM > Subject: Re: [drakelist] PS7 shutting down >> >> Ron Wagner <[EMAIL PROTECTED]> made an utterance to the drakelist gang >> ---------------------------------------------------------------------- >> Based on the PS-7 manual page 4, the "120" selection is for 108-132 volts >> input. And yes I doubt that voltage that low would run the PS-7. >> >> Given the sequence of events, my personal guess would be that a filter >> cap >> opened or lost capacity. Check the "small" 12 volt power supply used for >> the voltage regulator board. The 723 family can get rather strange with >> VCC under voltage. Its voltage would sag as you draw from the primary. >> Also check the primary supply caps. >> >> 73, >> Ron WD8SBB >> >> ---------------------------------------------------------------------- >> Submissions: [EMAIL PROTECTED] >> Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in >> body >> Hopelessly Lost: [EMAIL PROTECTED] - help in body of message >> Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net >> ---------------------------------------------------------------------- >> > ---------------------------------------------------------------------- > Submissions: [EMAIL PROTECTED] > Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body > Hopelessly Lost: [EMAIL PROTECTED] - help in body of message > Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net > ---------------------------------------------------------------------- ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
