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#1
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I have a Kenwood TR-751A and the light is out. The LCD and meter isn't lit
up anymore. I believe the last trip I took it was knocked out. I took the front cover off and couldn't see a bulb anywhere. Does anyone know where it's located and what I can use to replace it? You can e-mail me at Thanks in advance. Rich KCØCHJ |
#2
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Richard Donahue wrote:
I have a Kenwood TR-751A and the light is out. The LCD and meter isn't lit up anymore. I believe the last trip I took it was knocked out. I took the front cover off and couldn't see a bulb anywhere. Does anyone know where it's located and what I can use to replace it? You can e-mail me at It's either an electroluminescent panel or vacuum fluorescent panel that is part of the LCD stack. You should be able to see it on the schematic and see where the high voltage goes into the panel. Check to make sure it is getting voltage before replacing it. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#3
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I did take mine apart a couple of years ago, to clean the LCD...........the
original owner somehow got moisture behind the LCD, giving a water stain type of appearnce. I did notice that there were a couple of light bulbs behind the panel, but it has been awhile. I've been meaning to replace them with LEDs. Pete Scott Dorsey wrote in message ... Richard Donahue wrote: I have a Kenwood TR-751A and the light is out. The LCD and meter isn't lit up anymore. I believe the last trip I took it was knocked out. I took the front cover off and couldn't see a bulb anywhere. Does anyone know where it's located and what I can use to replace it? You can e-mail me at It's either an electroluminescent panel or vacuum fluorescent panel that is part of the LCD stack. You should be able to see it on the schematic and see where the high voltage goes into the panel. Check to make sure it is getting voltage before replacing it. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#4
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Rich....
I just replaced the meter lamp in my TR751A, and got another 751A with dead bulbs... so I'll be doing it again. You can play games with LEDs and dropping resistors, or jam something from Radio Shack in there... Or order the correct bulbs from Kenwood. The correct bulbs have a thin green cover over the bulb to provide the correct color. Part number from Kenwood parts (east or west, find them on Kenwood's website) is 830-0845-05. Order a few, and stash them away. They are used in a few other Kenwood rigs. The front panel comes off easily. You need to remove the knobs, and if I remember correctly, there is a hex nut (metric) on the tuning knob. After you take the top and bottom shells off the radio, and the knobs, there are a few screws on the left and right that allow you to tilt the front panel forwards to get to the bulbs. Good Luck!!! ....Dave "Richard Donahue" wrote in message ... I have a Kenwood TR-751A and the light is out. The LCD and meter isn't lit up anymore. I believe the last trip I took it was knocked out. I took the front cover off and couldn't see a bulb anywhere. Does anyone know where it's located and what I can use to replace it? You can e-mail me at Thanks in advance. Rich KCØCHJ |
#5
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This would be a great opportunity to put some LED's in there and then you'd
practically never have to worry about them going out on you again. I remember seeing a fantastic article in QST describing how to do this if you need some guidance. I don't remember what month it was, but if you can't find it let me know and I'll look around. Basically all there is to it, is to take power supply voltage (12V) from the radio and put a current limiting resistor in series with the LED (20mA). Pretty easy and a good upgrade if ever there was one. jason kb5urq P.S. I have an old TR-751 for sale by the way if you need some parts. Its not putting out any power but all the other functions work on it. Would let it go for pretty cheap if I could find a good home for it. "Pete KE9OA" wrote in message ... I did take mine apart a couple of years ago, to clean the LCD...........the original owner somehow got moisture behind the LCD, giving a water stain type of appearnce. I did notice that there were a couple of light bulbs behind the panel, but it has been awhile. I've been meaning to replace them with LEDs. Pete Scott Dorsey wrote in message ... Richard Donahue wrote: I have a Kenwood TR-751A and the light is out. The LCD and meter isn't lit up anymore. I believe the last trip I took it was knocked out. I took the front cover off and couldn't see a bulb anywhere. Does anyone know where it's located and what I can use to replace it? You can me at It's either an electroluminescent panel or vacuum fluorescent panel that is part of the LCD stack. You should be able to see it on the schematic and see where the high voltage goes into the panel. Check to make sure it is getting voltage before replacing it. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
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