I have a understanding that pulling individual components in the suspected circuit and testing them is a common way of finding faults in a circuit. My question is there a better way to find faults with the right tools?
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Troubleshooting questions
- Thread starter Derrick Walls
- Start date
checking voltages and using a scope to check parts is the way I have done repairs for over 20 years now. after finding a suspect part I will pull it loose and check to make sure it is good. lifting 1 leg of a diode cap or resister usually will let me check it and a trans I have pulled it all the way out if suspecting it bad and putting it on my tester. forgot you need a good freq counter also.
I'm trying to set the bias voltage on my galaxy 959. I have the + lead of meter to L37 and - to ground between xtal and filter. I'm not getting any reading for the driver. Could a bad voltage regulator cause this or will it still get power to it?
that is not how you set the bias voltage for a galaxy 959 radio. where are you reading to set it that way.
http://www.cbtricks.com/radios/galaxy/dx959/dx959_trans_adj.htm
http://www.cbtricks.com/radios/galaxy/dx959/dx959_trans_adj.htm
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I can't remember where I found those instructions, but they where saying that's how you do it when using mosfet upgrade
I did a dual mosfet with erf2030 and also used 2030 with driver. I think it fried my regulator when I tried it. 
for the voltage adjustment for the mosfet you put the ground to one of the cans and put the other lead on the gate leg of the mosfet and adjust for about 3.5 to 3.8 volts. the mosfet wil handle just under 4.0 volts. do not go above 4.0 volts or it will pop the mosfet.best at 3.5 gate voltage.