tag:blogger.com,1999:blog-2257458838727315711.post2167807676612570280..comments2024-01-04T02:13:53.621-08:00Comments on K6JCA: Other SB-220 Repairs and Modifications...Jeffhttp://www.blogger.com/profile/04853314106806116765noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-2257458838727315711.post-55275432243827887882017-12-11T03:31:53.532-08:002017-12-11T03:31:53.532-08:00Yes its does not show signs of burnt but could sti...Yes its does not show signs of burnt but could still be open, i am going to replace the board & the caps bank & see if my issue of tripping the 1 breaker goes away :).. <br />Anonymoushttps://www.blogger.com/profile/11238515560934319147noreply@blogger.comtag:blogger.com,1999:blog-2257458838727315711.post-65995433079839074202017-12-10T13:31:59.836-08:002017-12-10T13:31:59.836-08:00Kevin, stand in front of the amp and look into its...Kevin, stand in front of the amp and look into its chassis. On the right-hand side you should see a vertically-mounted board above the transformer -- in other words, the PCB with the diodes. The 0.82 ohm resistor is the resistor on its right-hand side, at the top.<br /><br />If you take a look at the first picture in this blog post (which shows the diode board), the 0.82 ohm resistor is the one that's furthest back on the PCB.<br /><br />- JeffJeffhttps://www.blogger.com/profile/04853314106806116765noreply@blogger.comtag:blogger.com,1999:blog-2257458838727315711.post-2531016485589583702017-12-10T12:15:54.531-08:002017-12-10T12:15:54.531-08:00So where is this .82 ohm resistor at on the SB-221...So where is this .82 ohm resistor at on the SB-221 cause i think mine is blown, i turned the amp on after i changed bulbs , not remembering the top had to be on & now the top breaker in the back trips everytime i turn it back on . Anonymoushttps://www.blogger.com/profile/11238515560934319147noreply@blogger.comtag:blogger.com,1999:blog-2257458838727315711.post-28028188045534627912013-02-17T06:26:43.362-08:002013-02-17T06:26:43.362-08:00Hi 9M2GET,
Your amplifier should not be arcing. ...Hi 9M2GET,<br /><br />Your amplifier should not be arcing. I always consider arcing dangerous, and I strongly recommend it be examined by someone with experience in servicing amplifiers.<br /><br />Best of luck!<br /><br />- Jeff, k6jcaJeffhttps://www.blogger.com/profile/04853314106806116765noreply@blogger.comtag:blogger.com,1999:blog-2257458838727315711.post-14038472167361844892013-02-17T00:53:38.316-08:002013-02-17T00:53:38.316-08:00HAI JEFF
AFTER I REPLACE THE RECTIFIER BOARD THER...HAI JEFF<br /><br />AFTER I REPLACE THE RECTIFIER BOARD THERE WAS SOME ARCHING NEAR THE TUBE BUT NOT TO LONG. IS IT DANGEROUS. TQAMATEUR RADIO STATION : 9M2GEThttps://www.blogger.com/profile/11196000192905715545noreply@blogger.comtag:blogger.com,1999:blog-2257458838727315711.post-19581807633416610002010-02-21T12:20:14.855-08:002010-02-21T12:20:14.855-08:00Something is probably pulling the relay line low, ...Something is probably pulling the relay line low, such as a short or something else, and this is turning the relay on. You'll need to trouble-shoot it to find out what the problem is.Jeffhttps://www.blogger.com/profile/04853314106806116765noreply@blogger.comtag:blogger.com,1999:blog-2257458838727315711.post-3453652045678425872010-02-21T09:20:07.549-08:002010-02-21T09:20:07.549-08:00when i turn on my sb220 the relay engages and the ...when i turn on my sb220 the relay engages and the two tubes start to turn red slowly.my recieve is gone until i turn the sb220 back off.then my recieve comes back and the relay disengages.what is causeing the sb220 to key itself up when i turn it on?Unknownhttps://www.blogger.com/profile/09975105733254544920noreply@blogger.com