MOON----- MRP-2000 Pre Amp Help

[Guest GMH212]

Hi everyone, It looks like I have managed to Zap my Pre Amp as it has now stopped working. I know these are relatively inexpensive but I like to fix things if my limited knowledge permits me. So it's a (other company) mrp-2000 the version on the board is 3.1. I have found that one of the SMP resistors has no reading when metered while every other one has. The trouble with some components these days they are not marked up and (other company) are no help. I was wondering if anyone has one and could see if their one is marked up or if working good you could check the resistance of said resistor. Please see the attached picture of component affected I have de soldered and it sits to the right in picture. Any help would be much appreciated. This resistor is first inline from radio antenna centre pin.

 

[SteveShannon]

31 minutes ago, Guest GMH212 said:

Hi everyone, It looks like I have managed to Zap my Pre Amp as it has now stopped working. I know these are relatively inexpensive but I like to fix things if my limited knowledge permits me. So it's a (other company) mrp-2000 the version on the board is 3.1. I have found that one of the SMP resistors has no reading when metered while every other one has. The trouble with some components these days they are not marked up and (other company) are no help. I was wondering if anyone has one and could see if their one is marked up or if working good you could check the resistance of said resistor. Please see the attached picture of component affected I have de soldered and it sits to the right in picture. Any help would be much appreciated. This resistor is first inline from radio antenna centre pin.

 

1. That looks like a capacitor, not a resistor.

2. This really isn’t an electronics lab kind of group, but many of us fiddle. You might get better results at one of the websites/forums dedicated to diy fixing consumer electronics.

3. Do you have a GMRS radio?

[Guest GMH212]

Hi Steve, My old Dad used to say just enough knowledge to be dangerous. You are absolutely correct this is a capacitor and after borrowing a tester found it to be 105pF I think I will just stop there and get a new one Thank You very Much for Your help. No I do not have A radio just scanners probably need to get licenced as the courses would help with the knowledge.

[WSEN940]

22 minutes ago, Guest GMH212 said:

Hi Steve, My old Dad used to say just enough knowledge to be dangerous. You are absolutely correct this is a capacitor and after borrowing a tester found it to be 105pF I think I will just stop there and get a new one Thank You very Much for Your help. No I do not have A radio just scanners probably need to get licenced as the courses would help with the knowledge.

Unless your interested in transmitting on HAM frequencies, I'd say you can read the material and skip the licensing. Of course, GMRS does not need a test.

[Guest GMH212]

Sorry to all forgot GMRS is PMR were I live and yes I have a few cobra and British brand Entel locked on PMR. And Yes just lazy and a busy life.

[SteveShannon]

8 hours ago, Guest GMH212 said:

Hi Steve, My old Dad used to say just enough knowledge to be dangerous. You are absolutely correct this is a capacitor and after borrowing a tester found it to be 105pF I think I will just stop there and get a new one Thank You very Much for Your help. No I do not have A radio just scanners probably need to get licenced as the courses would help with the knowledge.

Best of luck getting that figured out!

[SteveShannon]

17 hours ago, Guest GMH212 said:

No I do not have A radio just scanners probably need to get licenced as the courses would help with the knowledge.

In the U.S., GMRS has no courses.  It’s a personal radio service that simply requires paying for a license ($35 for ten years.)

Amateur radio does have three levels of participation.  Each require passing a test.  Again, the license costs $35 for ten years, but in many places the test is free or very inexpensive.  My club has free testing.  Studying can consist of merely memorizing the answers (which still imparts some knowledge, regardless of how some people might act) or working through the questions and supporting information until you understand the principles.  One source of free learning that I greatly enjoyed using when I studied for my ham license was hamstudy.org.  It offers flash card type learning with references for every question in the amateur radio test pool so you can learn as much as you want.

Based on your response I believe you’re in England.  I’m sure they have something similar.  Again, good luck!