President Washington 858 PLL no modulation, clicking relays

For discussions on CB Radio Repair and Troubleshooting, do not post modification requests here, use the Modifications forum !

President Washington 858 PLL no modulation, clicking relays

Postby wvdx » Friday 21st Nov 2008, 8:07

Hi,

I got this story second hand, I have not seen the radio, but apparently my buddy's Washington will not modulate on AM and keys up at about a watt, while before it keyed around 4. On SSB, the relays will continually click while the mic is keyed and it won't modulate. However, it receives fine. The problems seem centered around transmitting.

It seems to be a different problem than is mentioned in this thread, but perhaps I am wrong.

Neither one of us have the equipment to fix this, and we know just enough to be dangerous, however I'd like to know what others think before we take it into the shop. There is not the best selection of shops locally and he does not want to ship it so I think it's best if we can learn as much as we can about what may be the problem from you knowledgeable folks before plopping it down on someone's bench and telling them to have a good time.
wvdx
Newbie
Newbie
 
Posts: 1
Joined: Friday 21st Nov 2008, 7:52
Location: West Virginia

President Washington 858 PLL no modulation, clicking relays

Postby euhara » Friday 21st Nov 2008, 9:34

You might try this for the clicking relay,
in the left rear of the radio near the finals is a Tantalum capacitor number C179 it is directly in front of a green Mylar capacitor. Try removing this C179 capacitor and replace with an electrolytic capacitor of the same value, I believe it is a 2.2uF. That should stop the clicking relay.
Good luck, Jim
euhara
Frequent Keyer
Frequent Keyer
 
Posts: 61
Joined: Tuesday 29th Jul 2008, 23:59
Location: Fort Collins, Colorado

President Washington 858 PLL no modulation, clicking relays

Postby euhara » Friday 21st Nov 2008, 10:10

You might try this for the clicking relay,
in the left rear of the radio near the finals is a Tantalum capacitor number C179 it is directly in front of a green Mylar capacitor. Try removing this C179 capacitor and replace with an electrolytic capacitor of the same value, I believe it is a 2.2uF. That should stop the clicking relay.
Good luck, Jim
euhara
Frequent Keyer
Frequent Keyer
 
Posts: 61
Joined: Tuesday 29th Jul 2008, 23:59
Location: Fort Collins, Colorado


Return to CB Radio Repair and Troubleshooting



Who is online

Users browsing this forum: sonoma and 2 guests