The Electronics Universe

The CB Forum => CB Radio Repair Forum => Topic started by: smoke blower on March 05, 2012, 01:25:34 PM

Title: galaxy 77 hml
Post by: smoke blower on March 05, 2012, 01:25:34 PM

i have a galaxy 77 hml it only pickup strong stations the recieve is very weak.also the echo was working then it just stop.the radio dose recieve but i have to turn the volume all the way up to here if someone close talks i hear them somewhat ok but radios farther away i cant hardly hear them has anybody have an idea what i could check.

Title: Re: galaxy 77 hml
Post by: The Radio Shop on March 05, 2012, 07:25:08 PM

How about transmit? Does it work ok? Power out, audio? If tx is fine I thaink it is a front end issue. Maybe the first rf amp is gone.
Check tr17, D15 and D16

Title: Re: galaxy 77 hml
Post by: smoke blower on March 06, 2012, 04:37:58 PM

i replaced tr 17 and checked the others everything looks ok.the echo stop working to i dont know if this has any efect on thr recieve part

Title: Re: galaxy 77 hml
Post by: The Radio Shop on March 06, 2012, 09:00:42 PM

ok, since the echo has also stopped I would say there is some missing voltage from a stage....But where is the guess.

Title: Re: galaxy 77 hml
Post by: smoke blower on March 07, 2012, 08:46:59 AM

i checked the voltage going to the echo board and i had my 8 volts i ll try checking some others.i will let you know

Title: Re: galaxy 77 hml
Post by: smoke blower on March 08, 2012, 09:53:19 AM

thanks to you all i got the recieve back i replaced d 150 and the recieve returned.i am still working on the echo board so far i havent been able to get that straight yet.

Title: Re: galaxy 77 hml
Post by: The Radio Shop on March 08, 2012, 02:22:17 PM

Good jom mate!
Glad to hear ya got it working.