| Author |
Message |
    
307 (307)
| | Posted on Sunday, July 29, 2001 - 1:26 pm: | 
|
Go to Radio Shack , Pick up a 330 uF AXIAL LEAD Capacitor.
1) Remove BOTTOM COVER.
2) Remove the small screw holding the COUNTER MODULE in place.
3) Locate IC8 (7805A) transistor.
4) Directly in front of IC8 is a small capacitor 100 uF 16 Volt.
5) Attatch the NEW capacitor in PARALLEL with the existing one. (note the CENTER PIN of IC8 is the NEGATIVE side of the capacitor).
6) The capacitor will "lay" beside the existing one.
7) Put the rig back together , BUZZ GONE. |
307 (307)
| | Posted on Wednesday, August 01, 2001 - 6:28 pm: |
|
Oops , I left out a step , After you remove the small screw that holds the COUNTER MODULE in place OPEN the counter module by removing the LID on the small box...Then proceed INSIDE the Counter Module.
Sorry |
Harpoonman
| | Posted on Wednesday, October 03, 2001 - 12:17 pm: |
|
307!
My VR9000 is performing very well thanks to your e-mail assistance. However, there definetly IS a hum or buzz (hum is a better description) that comes through during transmission on this radio. I've read a number of other Forum users who have noticed that same hum, and there are some VR9000 owners who have not noticed such a hum at all. This hum is defintely present when I listen to myself through another radio as a monitor, and it seems to be more noticable in the AM mode than in the SSB mode. Also, when I turn the frequency counter off, the hum disappears!
I've also carefully read your fix for this hum, above, but, at the risk of sounding stupid and embarassing myself, could you give me a bit of an electronics primer here? First, can you explain exactly what you mean when you refer to putting in the new 330 uF axial lead capacitor "in parallel" with the existing one? Does this mean that I would solder the new capacitor to the same attachment points as the 100 uF 16 volt capacitor? You see, I have a basic understanding of "in series" v.s. "in parallel" as far as general electrical wiring goes, but I'm not sure how to relate this to the circuit and component decription you give above. Any detail would be appreciated.
None of my DX contacts have mentioned this hum, and I haven't had time to contact many of my local pals to see if they can hear it from a more "normal" distance. I'd like to fix the hum because I'm the kind of person that likes things to work properly (if not perfectly), but if the hum is not noticable to my contacts and doesn't bother anyone else (but me), then maybe I should just leave it alone.(?)
Lastly, has Copper contacted the manufacturer of the VR9000 (or contacted Ranger) and informed them that there may be some problem with the radio's frequency counter causing interference during transmissions in some radios? If so, what did the manufacturer plan on doing about it?
Overall, I think the VR9000 is an excellent radio and a great buy for the price and I'm extremely happy with it, hum or no hum. But even for a less expensive radio, such a flaw should be corrected at the factory when the manufacturer has been informed of the problem, rather than the merchant or the end user having to add on extra components!
Thanks for you help!
Harpoonman |
307
| | Posted on Wednesday, October 03, 2001 - 12:56 pm: |
|
Yes , Parallel means attatch it "across" the existing one. Series would mean lifting one side and putting the new capacitor "in line" with the existing one. |
Insider
| | Posted on Wednesday, October 03, 2001 - 4:03 pm: |
|
Will this fix remove the hum from a Galaxy 88's counter? Also, does Copper sell replacement segments for the counter?
Thanks for your help. . . |
Harpoonman
| | Posted on Wednesday, October 03, 2001 - 4:48 pm: |
|
OK, 307, and thanks.
I thought that maybe this was what you meant, but I wasn't sure. I may try this fix out if others hear the hum and it becomes bothersome or becomes worse. I'll let you know how it goes, if I make the attempt!
Harpoonman |
Insider
| | Posted on Friday, October 19, 2001 - 10:26 pm: |
|
307: Just wondering if this fix will remove the slight buzz I get on my Galaxy 88's Freq counter? Also, do you know where I can obtain replacement LED segments?
Thanks in advance. |
307
| | Posted on Tuesday, October 23, 2001 - 6:58 am: |
|
Yes it will!!! |
|
