| Author |
Message |
    
chris leggett
| | Posted on Sunday, May 19, 2002 - 1:21 pm: | 
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If I talk for an extended time my 99 will go totally blank.No lights,sound.....nuthing.I hit it and it comes back on.
I am going to replace the power cord with a new one,but I don't feel that is the problem.Any thoughts? thx |
Tax
| | Posted on Sunday, May 19, 2002 - 5:34 pm: |
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There might be a overload in a cirrcuit witch causes the 99 to shut off |
N8fgb
| | Posted on Sunday, May 19, 2002 - 6:58 pm: |
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Cold solder joint
Rich |
ss8541
| | Posted on Sunday, May 19, 2002 - 7:44 pm: |
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find the 8v reg on the rt hnd side of radio with radio facing you and speaker side up. right in between the 2 thumb screw holes is the reg. now flip radio over and resolder the 3 legs on this trans. this area is known for cold solder connections. in your case it is most likely pulling away as radio heats causing everything to drop out.
but....this may not answer the light problem as the lights are not powered by the 8v reg. the best thing to do would be to solder everything within a 2" strip from front to back on that side of the board, as it looks evident that it is a cold solder joint(in the 13v source line) since the lights won't even come on. |
Tech671
| | Posted on Sunday, May 19, 2002 - 7:45 pm: |
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Try a 5a fuse in your power cord....NO HIGHER.
If that's not it then it's likely the regulator in the radio. |
BIG FOOT
| | Posted on Sunday, May 19, 2002 - 7:47 pm: |
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...check your power cord where it plugs into the back of the radio..... may be loose enuf to give trouble...other wise take it to a GOOD repair place ( preferably when it IS giving trouble )...BIG FOOT |
chris leggett
| | Posted on Sunday, May 19, 2002 - 8:55 pm: |
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An overload in a circut? Does this radio have a circut breaker? |
chris leggett
| | Posted on Monday, May 20, 2002 - 8:00 pm: |
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It's really strange! Both times I was running with another truck and it went totally out like it was unplugged,in the same stretch of highway!Then it works fine for another day or 2.
It's still under warranty,I just don't want to deal with all that.
I was hoping the "cold solder joint" wasn't it but that was my first guess too. |
Dx431
| | Posted on Monday, May 20, 2002 - 9:20 pm: |
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LOL!
The 99's are notoriuos for that. If you run them in a big truck, it will shake 'em apart.A friend of mine bought one off of truck driver and he had to go through the whole radio. About 80% of the solder joints had to be resoldered. I have a HR2510 in my pick-up and never had a problem with it. |
chris leggett
| | Posted on Wednesday, May 22, 2002 - 6:52 pm: |
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Ok I'm officially a dork! I turned it on this morning and nuthin,no lights, no sound, nuthin.Got out a test light,no power to the plug that plugs into the radio,pulled the inline fuse down from the headliner.........and it is melted!
The 4a fuse is stuck in it still,it's that melted.I replaced the inline fuse holder and installed another 4a fuse.So far so good.
I bet that the spade type fuses would have better contact and wouldn't melt stuff. |
307
| | Posted on Wednesday, May 22, 2002 - 9:25 pm: |
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I have to agree with SS8541 , It is a common stress point in between the mounting screws. This is exactly where the 8 volt regulator is located. I have seen 1 in every 3 that have intermittent power problems , have the center lead on this regulator broken. If you apply power and "squeeze" the sides of the radio inward , you should see it come back on when it is off...As for the spade fuse holder , if the contacts are not "FLAT" on the outersides of the fuse contact point , this will generate a carbon area. Once there is carbon buildup on the fuse the radio "starves" for power. There is a voltage drop at the fuse and this drop causes massive current which melts the plactic fuse holder. Also never ground the radio to the chassis. Always run Red and Black straight to the battery.
307 |
Snapperhead
| | Posted on Wednesday, May 22, 2002 - 9:35 pm: |
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Don't worry Chris, It's all good...Remember, we're only human....Glad to see you found the problem.......73's
Phil(SnapperHead) |
Tech671
| | Posted on Wednesday, May 22, 2002 - 9:43 pm: |
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Try a 6 or 7a fuse for a dual final ssb rig. |
DeadlyEyes
| | Posted on Saturday, June 08, 2002 - 12:16 am: |
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N8FGB,above, may be onto something. A cold solder joint that is barely touching when cold will work. BUT if it warms up the joint expands and the physical contact may be broken. Hence loss of function.
Before you return the radio to the repair shop or factory get a good magnifying glass and carefully examine every solder joint on the board starting with the power input area. Look for discoloration, corosion or anything unusual on the solder joints. |
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