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Galaxy Dx88 choppy receive issue

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stlouisx50

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I have a Galaxy Dx88 which I used as a base station years ago, but stopped due to an issue I have. The receive is choppy. You can hear signals and or static but the choppyness won't stop. Do you know what could be causing this? Here's a video of the issue. https://youtu.be/i1DSqaXWF6s

Update: I did find this "General Galaxy Tips

77-99 SSB models AM/FM receive problem: If AM/FM receive out, or intermittent, check D4" in a web search, could this be my problem?
 
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KC4RAF

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Without an antenna being connected and the noise is there, I'd suspect either a capacitor or maybe a diode at fault. It's more than likely in the voltage input side of your transceiver. If you have a schematic, use it to check all the components in that circuit.
Keep us posted if you chose to inspect the inside of your radio; some one will be able to help. If you chose to let a radio shop check it out, be sure it's not a golden screwdriver outfit.
 

stlouisx50

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Thanks for your input. I found the schematic for the radio, however I read that while you can check diodes, resistors, and capacitors with a multimeter, you likely will not get an accurate reading while they are mounted to the board. Should I still give it a shot in the power side?
 

KC4RAF

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That's true about the component being in circuit, you will not get an accurate reading. If you are able to do some soldering, you can unsolder one leg and check the part that way. You have to lift the leg completely off the board.
With a diode, you measure the resistance one way and then switch the leads of the meter and read again. You should read close to infinity one way and some type of reading the other.
With a capacitor, test the unit one way, then switch the meter probes. You should see a deflection when reversed test leads.
I always like to use an analog meter for testing these two components. A digital works ok, but I'm old school.
If the diode reads the same in both forward and reverse test lead connection, then it will generally be bad.
If testing a capacitor reads zero on the lowest scale, then it too is generally bad.
If it reads the same when reversing the test leads, then it is bad also.
HTH.
If you need more help let us know.
Hopefully I've not confused the heck out of you...

edit: you can find cheap analog multimeters on ebay.
It doesn't hurt to have both analog and digital.
 
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