Date
1 - 10 of 10
d700 dead AGAIN
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David Smith <kd6zxe@...>
Took the radio into Kenwood mid december because the radio wouldn't
turn on, nothing, no display. They gave it back to me after replacing a surface mount fuse and doing a tuneup of the radio. Now that I just got to enjoying the radio while tuned up properly as well (audio levels are perfect now!) the display is gone AGAIN. Has anyone found any details out about thise surface mount fuse, what values it is, and any suggestions for how to mount an external one? This is really lame. My best guess is it has to do with the fact that every time I get out of the truck I disconnect the face and put it away, as I don't want it to be a reason for someone to break in. (Here in Mexico.) Dave |
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Pete AE5PL
If you disconnect the display every time, make sure that no power is
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going to your radio (radio on a the switched side of your ignition). Otherwise, there is always power going to the front panel and you will keep blowing the fuse. Looking at the parts list for the panel, my guess is the "fuse" is actually a diode. According to the parts list, it is a LFB01. Hope this helps. 73, Pete Loveall AE5PL pete@... -----Original Message----- |
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Martin Maxwell <maxwell679@...>
How is the radio connected to the cars electrical? If it is connected throught the fuse block you could be surging the fuse/diode when you start the car. I connect mine direct to the battery, have never had any problems. Turn the radio off before turning the car off, and turn it ON AFTER starting the engine. That way you reduce the possibility of a power surge during starting.
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Martin
----- Original Message -----
From: David Smith To: TMD700A@... Sent: Wednesday, January 14, 2004 5:39 PM Subject: [TMD700A] d700 dead AGAIN Took the radio into Kenwood mid december because the radio wouldn't turn on, nothing, no display. They gave it back to me after replacing a surface mount fuse and doing a tuneup of the radio. Now that I just got to enjoying the radio while tuned up properly as well (audio levels are perfect now!) the display is gone AGAIN. Has anyone found any details out about thise surface mount fuse, what values it is, and any suggestions for how to mount an external one? This is really lame. My best guess is it has to do with the fact that every time I get out of the truck I disconnect the face and put it away, as I don't want it to be a reason for someone to break in. (Here in Mexico.) Dave Community email addresses: Post message: TMD700A@... Subscribe: TMD700A-subscribe@... Unsubscribe: TMD700A-unsubscribe@... List owner: TMD700A-owner@... Shortcut URL to this page: http://www.onelist.com/community/TMD700A ------------------------------------------------------------------------------ Yahoo! Groups Links a.. To visit your group on the web, go to: http://groups.yahoo.com/group/TMD700A/ b.. To unsubscribe from this group, send an email to: TMD700A-unsubscribe@... c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. |
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Jay Rutherford <k1uc@...>
Really? I have live power to my TM-D700A box all the time (in the trunk,
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but wired directly into the battery), and often remove the panel from its mount when parked. I've never had a problem with this in well over a year. I've even disconnected the panel a number of times with the radio turned on. I think the problem lies elsewhere, perhaps in a defective cable between the box and the front panel. Jay K1UC AE5PL Lists wrote: Otherwise, there is always power going to the front panel and you will |
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Steve Wilson <kf6wax@...>
I used to turn my radio OFF and ON religiously 3 years ago but for the last
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few years (almost 3 now) just leave the radio switched on all the time when I am at the store ect.....no problems in more than 3 years of doing this connected direct to the battery! 73s Steve, KF6WAX PHX Igate sysop
----- Original Message -----
From: "Martin Maxwell" <maxwell679@...> To: <TMD700A@...> Sent: Wednesday, January 14, 2004 6:17 PM Subject: Re: [TMD700A] d700 dead AGAIN How is the radio connected to the cars electrical? If it is connectedthrought the fuse block you could be surging the fuse/diode when you start the car. I connect mine direct to the battery, have never had any problems. Turn the radio off before turning the car off, and turn it ON AFTER starting the engine. That way you reduce the possibility of a power surge during starting. ---- Yahoo! Groups LinksService.
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David Smith <kd6zxe@...>
It is connected to an auxiliary fuse block under the hood, which has
big fat cables going to the battery. Your power surge idea is a possibility, but if that were the case, when I went to turn it on and it was dead, it would have come on and then not come back when I started the car. I don't see how there could be a power surge problem when turning the car off, either. --- In TMD700A@..., "Martin Maxwell" <maxwell679@c...> wrote: How is the radio connected to the cars electrical? If it isconnected throught the fuse block you could be surging the fuse/diode when you start the car. I connect mine direct to the battery, have never had any problems. Turn the radio off before turning the car off, and turn it ON AFTER starting the engine. That way you reduce the possibility of a power surge during starting. wouldn't turn on, nothing, no display. They gave it back to me afterreplacing a surface mount fuse and doing a tuneup of the radio. Now that I(audio levels are perfect now!) the display is gone AGAIN.what values it is, and any suggestions for how to mount an externalone? This is really lame.out of the truck I disconnect the face and put it away, as I don'twant it to be a reason for someone to break in. (Here in Mexico.)---------- Yahoo! Groups LinksService. |
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Dale Blanchard <wa7ixk@...>
The fuse is a surface mount fuse. F-902. 1.8 amp #925. I have mine bridged with a piece of small buss wire that came with my RCA mulimeter. They use 1/4 inch of it for a fuse. On mine the control head cable was defective and the shield would short to the other pin when disconecting it. The shild is next to the 12 v line. It is a bad design. I cut mine off and spliced a short section of handset curly cord to it. I did not have a crimper or I would have fixed it.
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I have since plugged and unpluged it many times with power on and off with no problems. When using it in the house and programing it I use a standard telephone handset cord cut into with a telephone line cord plug attached as I have a crimper for that. The other half goes on my motorcycle. AE5PL Lists wrote: If you disconnect the display every time, make sure that no power is |
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David Smith <kd6zxe@...>
I wonder, instead of cutting the factory cable, would it make sense
to use a handset extension cable? --- In TMD700A@..., Dale Blanchard <wa7ixk@e...> wrote: The fuse is a surface mount fuse. F-902. 1.8 amp #925. I have minemulimeter. They use 1/4 inch of it for a fuse. On mine the control head cablewas defective and the shield would short to the other pin whendisconecting it. The shild is next to the 12 v line. It is a bad design. I cutmine off and spliced a short section of handset curly cord to it. I didnot have a crimper or I would have fixed it.off with no problems.telephone handset cord cut into with a telephone line cord plug attached as Ihave a crimper for that. The other half goes on my motorcycle.is ignition).going to your radio (radio on a the switched side of your willOtherwise, there is always power going to the front panel and you keep blowing the fuse. |
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Ferrell Brown <ctkpgdmndn@...>
Dave I had the same problem. It is caused by the
fact that repeated removal of either cable with power connected to the main unit (even though it is powered off) unless you have the power lead switched power still reaches the surface mount fuse. Since this is the case unless you disconnected the power physicaly from the main unit you run the risk of this happening each time. What happens in my opinion is that when you power off the radio it only via software turns the face unit off and power is still reaches the main unit thereby causing the fuse to blow at times when the cable is unpluged from either end. This is pretty much what Kenwood stated in a note when they retuned my radio. This certainly is a design flaw but really nothing you can do about it. Only safe way to disconnect the cable is to first disconnect the power lead from the radio main unit. Not very convienent if the unit is mounted in a out of the way place. Anyway thats the long and short of it. Hope this helps 73 KE4QDC Ferrell __________________________________ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus |
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hardlyevrhom
--- In TMD700A@..., "David Smith" <kd6zxe@m...> wrote:
Took the radio into Kenwood mid december because the radiowouldn't turn on, nothing, no display. They gave it back to me afterreplacing a surface mount fuse and doing a tuneup of the radio. Now that I(audio levels are perfect now!) the display is gone AGAIN.what values it is, and any suggestions for how to mount an externalone? This is really lame.out of the truck I disconnect the face and put it away, as I don'twant it to be a reason for someone to break in. (Here in Mexico.)I had the same problem with mine, after the 1st replacement it worked fine for a few months, then quit again. I returned it to the dealer who replaced the fuse, but then took the time to thoroughly check it out, and blew the fuse 2 or 3 more times! It turned out that the pins from the components on the bottom of the circuit boards had not been sufficiently trimmed at the factory and were occasionaly making contact with the case, grounding and blowing the fuse. Kurt Keilhofer KC8RWD |
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