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VFD in early 2000s Subaru radio

VFD in early 2000s Subaru radio

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This is in a radio that flashes when powered up (the whole unit, not just the display). I will probably save it and use it on a breadboard.

20190731_151439.jpg 16027113433453466280112936807173.jpg 20201010_164230.jpg 20200827_162858.jpg

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Filename:20201010_164230.jpg
Album name:Fluorescent05 / Miscellaneous Electrical Stuff
Keywords:Miscellaneous
File Size:508 KB
Date added:Oct 10, 2020
Dimensions:2464 x 1386 pixels
Displayed:60 times
Date Time:2020:10:10 16:42:30
DateTime Original:2020:10:10 16:42:30
Exposure Bias:0 EV
Exposure Time:1/17 sec
FNumber:f 1.7
Flash:No Flash
Focal length:4.25 mm
ISO:250
Make:samsung
Model:SM-G950U
Software:G950USQS8DTI4
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URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-187248
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rjluna2
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Robert


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Oct 11, 2020 at 11:26 AM Author: rjluna2
Probably the circuit that controls the display may be failing

Pretty, please no more Chinese failure.

Ash
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Oct 11, 2020 at 03:26 PM Author: Ash
Some internal converter is running in hickup failure mode, possibly due to a dried up capacitor
Fluorescent05
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Oct 14, 2020 at 05:22 PM Author: Fluorescent05
Update: I fixed the entire radio. I still need a wiring harness for it though.

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joseph_125
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Oct 14, 2020 at 06:11 PM Author: joseph_125
Nice! As for the harness, a junkyard or order one off eBay. I ordered a harness for this old Toyota radio/cassette I had lying around.

With the Toyota radios, you technically don't need a harness. You can look up the pinout online and use some small flag connectors shoved in the connector. It "works" just make sure not to short it out.
Fluorescent05
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Oct 14, 2020 at 06:12 PM Author: Fluorescent05

Nice! As for the harness, a junkyard or order one off eBay. I ordered a harness for this old Toyota radio/cassette I had lying around.

With the Toyota radios, you technically don't need a harness. You can look up the pinout online and use some small flag connectors shoved in the connector. It "works" just make sure not to short it out.

What do the connectors on Toyota radios look like?

I can't pretend a stranger is a long awaited friend. -Neal Peart

joseph_125
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Oct 14, 2020 at 06:29 PM Author: joseph_125
The end that plugs into the OEM radio looks like this.

And the end on the radio looks like this.

And here's the pinout.
Fluorescent05
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Oct 14, 2020 at 07:49 PM Author: Fluorescent05
The larger connector looks more like the one on the back of this radio. On the back of this radio, there is a 14 pin connector with pins 1 and 7 being illumination + and -. The audio pins (which are meant for 4 ohm speakers) are 2, 3, 4, 5, 8, 9, 12, and 13. Pin 14 is for the power antenna. Pin 6 is 12 volt memory, pin 10 is 12 volt accessory, and pin 11 is ground.

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120/240VAC @ 60HZ


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Oct 14, 2020 at 08:01 PM Author: LampLover

The larger connector looks more like the one on the back of this radio. On the back of this radio, there is a 14 pin connector with pins 1 and 7 being illumination + and -. The audio pins (which are meant for 4 ohm speakers) are 2, 3, 4, 5, 8, 9, 12, and 13. Pin 14 is for the power antenna. Pin 6 is 12 volt memory, pin 10 is 12 volt accessory, and pin 11 is ground.



The wire harness is available online if you don't have the one from the car. They are commonly refereed to as "Reverse" wiring harness that is the one that plugs into the factory radio in the aftermarket world the wire harness is the one that the cars harness plugs into (male pins) and is then wired to the aftermarket stereo.

How did you fix it? Did you use a different power supply.

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Fluorescent05
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Oct 14, 2020 at 08:20 PM Author: Fluorescent05

The wire harness is available online if you don't have the one from the car. They are commonly refereed to as "Reverse" wiring harness that is the one that plugs into the factory radio in the aftermarket world the wire harness is the one that the cars harness plugs into (male pins) and is then wired to the aftermarket stereo.

How did you fix it? Did you use a different power supply.

I used a computer power supply instead of the crappy D batteries. That helped a lot! Also, it says on the eBay listing that the reverse harness will not work with factory radios, but it looks exactly like the plug on my factory radio. Can I use 6 ohm speakers instead of the recommended 4 ohm ones to test the audio?

I can't pretend a stranger is a long awaited friend. -Neal Peart

joseph_125
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Oct 14, 2020 at 11:26 PM Author: joseph_125
Hmm maybe the batteries were running low. I use a 12vdc 3-4A power brick to power mine up. Anyway reverse harness should be the correct term for what you're looking for so I don't know why the eBay listing said otherwise.

Using speakers with a higher impedance than what the amplifiers is rated for is generally safe at least for solid state amplifiers. Note that you'll lose some power though as generally the power is rated using the impedance rating on the amplifier so 4 ohm in your case.

Also of note, if you hook up two speakers in parallel on one channel it will present itself as half the impedance to the amplifier. So a pair of 8 ohm speakers in parallel will be a 4 ohm load to the amplifier.
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Oct 15, 2020 at 06:59 AM Author: Fluorescent05

Hmm maybe the batteries were running low. I use a 12vdc 3-4A power brick to power mine up. Anyway reverse harness should be the correct term for what you're looking for so I don't know why the eBay listing said otherwise.

Using speakers with a higher impedance than what the amplifiers is rated for is generally safe at least for solid state amplifiers. Note that you'll lose some power though as generally the power is rated using the impedance rating on the amplifier so 4 ohm in your case.

Also of note, if you hook up two speakers in parallel on one channel it will present itself as half the impedance to the amplifier. So a pair of 8 ohm speakers in parallel will be a 4 ohm load to the amplifier.

Cool! I will probably order the reverse harness and use 8 ohm speakers for now. I just want to know that it works before I order proper speakers.

I can't pretend a stranger is a long awaited friend. -Neal Peart

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