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Message |
    
Bburck
Junior Member
Username: Bburck
Post Number: 29
Registered: 1-2005
| | Posted on Monday, July 18, 2005 - 11:13 am: | 
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I have this problem wiht my Galaxy 959, This weekend, I benched it to put the radio on my 7 digit freq counter just to double check the freq stability since opening the clarifier. I had the counter hooked up to the pin checking the frequency according to the galaxy service manual. When I switched over to USB to check the freq offset, the radio dropped down about 10,000 mghz and the radio will barely key up. I turned it off, and left it sitting, not wanting to further cause any issues. The next morning, I turned on the radio and it was back on freq.. but after a few minutes, im assuming after something inside warmed up.. it dropped back down in freq.. with no power on the key up. Does this issue sound like something any of you have dealt with before???? any suggestions would be helpful, thanks..
WoodStock
Augusta, Ga Home of the Masters |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2053
Registered: 12-2001
| | Posted on Monday, July 18, 2005 - 8:59 pm: |
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What is the exact reading on the freq. counter after it drops,in megahertz or kilohertz?Very likely a cold or bad solder joint at the mod points,provided it was in good working order previous to that,it's the most logical choice,the second is a partially destroyed diode or other semi-conductor due to excessive heat when soldering.Bigbob |
Bc910
Advanced Member
Username: Bc910
Post Number: 565
Registered: 7-2004
| | Posted on Monday, July 18, 2005 - 11:06 pm: |
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Cold solder joint, my 99 did that
except mine did it wether it was on usb or lsb or am or fm etc.
Galaxy man, that's the problem. 
Sorry, had to do it
BC
S9S9S9S9S9S9S9S9S9S9S9S9S9S9S9S9 |
Bburck
Junior Member
Username: Bburck
Post Number: 30
Registered: 1-2005
| | Posted on Tuesday, July 19, 2005 - 7:54 am: |
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Thanks guys for imput, Im not sure it is a cold solder joint, I did the mod about 3 months ago, haven't had one problem, I was just wanting to check to see if I had any major frequency drift from the open clarifier so I was rechecking the radio. I literally took my eyes off of the radio to talk to my son, looked back at it, and all of a sudden the freq counter was showing something like 15115 (1mhz drop, not 10,000 i wasn't thinking in my last post) (According to the service manual, align as follows "Set radio to CH 1 LSB mode.
Connect frequency counter to TP3. Adjust L20 to 16.27000 +/- 20 Hz") I clipped my counter probe onto TP3 and got the correct freq, I turned the clarifier to check the range. Then my son was asking me some questions so I was looking away talking to him, when i looked back, the freq counter was showing something around 15.115 mhz and the freq display on the radio was showing something like 26.115.. those freqs might not be exact im pulling this from memory. Anyway.. It was such a great talking radio, I hate to have it messed up!! and YES BC... I am budgetting an SN or an OMEGA as we speak!!! let me leave the toys alone and move on up to a RADIO
Thanks again..
Brian
WoodStock
Augusta, Ga Home of the Masters
(and my broke down Galaxy) |
Bburck
Junior Member
Username: Bburck
Post Number: 31
Registered: 1-2005
| | Posted on Tuesday, July 19, 2005 - 7:57 am: |
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Oh yeah.. I forgot.. THIS didn't occur until I flipped the switch to SSB to check the offset.. I happened to flip the switch and then look away to talk to my son.. when I looked back.. it was MESSED UP! BC.. where should I look for the a cold solder joint on the board? do you remember what was the cure for yours? |
Bigbob
Senior Member
Username: Bigbob
Post Number: 2055
Registered: 12-2001
| | Posted on Wednesday, July 20, 2005 - 5:04 am: |
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Well,maybe I spoke to soon,check the voltages at the varactor diode in the three modes am,usb,lsb this is only pertinant if the service manual gives the correct as a base line,this should tell you if you fried another diode or the voltage regulator,some clarifier swing mods connect the clarifier to ground on one side and can put to much stress on regulator,always use at least a 470 ohm resistor on cold side of clarifier,it reduces swing but saves your regulator.Bigbob |
Bburck
Junior Member
Username: Bburck
Post Number: 32
Registered: 1-2005
| | Posted on Thursday, July 21, 2005 - 7:28 am: |
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Thanks for everyone with suggestions, BC.. it must have been a cold solder joint, I just don't understand, I have had the radio for about six months, the guy I bought it from had it for 2 years with no problems. I took out the trusty old IRON and started hitting all the solder points on the main board, I also unplugged and replugged all the on board jumpers. I have kept the radio on for 2 full days now with no glitches, everything seems to be working 100% like it was before. STILL, I am looking at buying an S9 or an Omega force. THANKS AGAIN!!!!
WoodStock
Augusta, GA Home of the Masters |
Bburck
Junior Member
Username: Bburck
Post Number: 34
Registered: 1-2005
| | Posted on Monday, July 25, 2005 - 7:13 am: |
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Just in case anyone was wondering... I found out that it was my Viagra B board causing the problems, I removed the board and now there doesnt seem to be any problems.. except that now I only have 40 channels and do miss .555 SSB!!! |
Crackerjack
Advanced Member
Username: Crackerjack
Post Number: 696
Registered: 7-2004
| | Posted on Monday, July 25, 2005 - 9:46 am: |
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Sorry to weigh in late.
I had a similar symptom on my 959, after the mod, and found an article somewhere that directed me to hold the "Key" on the Mic, while turning the radio on.
That performs some sort of microprocessor RESET, and cured the problem. If I let the radio set for a while, the step had to be repeated.
Also, remember that in SSB, actual frequency counters (add on test equipment) will not register correctly without some sort of measurable tone modulation. |
Therealporkchop
Intermediate Member
Username: Therealporkchop
Post Number: 263
Registered: 11-2002
| | Posted on Wednesday, July 27, 2005 - 2:01 pm: |
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I did the mods to mine for the clarifier and I don't get any change. How'd you mod yours? |
Bburck
Junior Member
Username: Bburck
Post Number: 35
Registered: 1-2005
| | Posted on Thursday, July 28, 2005 - 7:28 am: |
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Method 2:
1. First, remove power to the radio. Remove the bottom chassis cover of the radio.
2. Remove JP195 and JP196.
3. Connect a jumper wire between +8V and J9 pin F1.
4. Perform an PLL alignment.
This is the CB Tricks Mod # 2.. I only get about 4khz up and about 4khz down after doing some other adjusting to the frequency via L20, L21, L22 for recieve, and L23, L24, and L25 for Xmit. I still haven't performed the "Increase Clarifier Range" Mod... The only reason I bought the 959 was because it already had the Viagra B Channel Board in it.. since the board has failed, I am looking for my next radio and will probably sell the 959 at online auction. |
Therealporkchop
Intermediate Member
Username: Therealporkchop
Post Number: 271
Registered: 11-2002
| | Posted on Thursday, July 28, 2005 - 4:44 pm: |
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I did all the mods for the clarifier shown there. I don't get as much slide as you do.
A common problem I have found working on Galaxy radios is this. When you have a channel problem, of just about any type. If you are trying to talk to someone and they say you sound off frequency to them, try this. The harnasses that go to the channel selector, start checking each and every wire. I've found more than 1 time that this is the problem. A old cracked or broken wire. Hit the right one and the receive just falls out. Move it just right, and you'll have recieve again. If you are having trouble with your transmit or receive dropping out for no reason, check this first.
Never had a cold solder joint on a Galaxy, not yet anyway...
S9 |
Patzerozero
Senior Member
Username: Patzerozero
Post Number: 1108
Registered: 7-2004
| | Posted on Friday, July 29, 2005 - 5:31 pm: |
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by putting SPST switch inline with P5 & P6 on channel selector switch, you will get 27.555 on ch 24 with both switches OPEN...but it'll STILL be a galaxy!
did the clarifier mod on texas ranger 696f(the 1st version AM/SSB mobile with freq counter) & it would slide 11-12 kc in 1 direction & maybe 5-6 kc the other direction. removed 1 resistor, 1 diode, jumpered 1 diode & added 9 volts to IC pin-no other mods. the 696f, galaxy 949, 959 TR 696 base & a couple others are THE SAME so check for mods for them & see if you see anything DIFFERENT somewhere.
S9 or OMEGA would be an EXCELLENT upgrade! |
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