Late to the party here, but great video. I love a good repair video, especially when it's a device I own and love! I have a 2004 and a 2006. Great scanners. Made by GRE. My 2004 has a CE232 (I think that's the model) computer interface by the late Bill Cheek. The 2006 has the OS456 by Optoelectronics. Both were way ahead of their time.
Question for your post. Realistic Pro 2004. I have a couple with the same problems. Both Power up intermittently. When they power up . A few minutes in. Scanner loses the display and sound. This also happens when I press any button on the keyboard. Blue backlight still lights up. Red LED for sound squelch is on. On one radio. I have installed wires through the CPU board vias. Along with changing out nearly all the caps . I know there could be solder issues. I have resoldered a abundance of vias and solder pads. Thinking something else is going on here. Have you ran into the same issues with a 2004 repairs. Thanks.
I learned on this that they are not easy to diagnose. The double sided board was a failure for Tandy. It sounds like you have a power supply issue. try monitoring the power rail to see if it's failing.
Thanks, that was an excellent video on the Pro 2004. I had one of these radios, I sent it back before the warranty ended as it had a problem with the volume control. At first I thought it was my cat turning the volume up by walking on the radio ( you know cats right ) but while sitting beside the radio one day the volume went full blast, ( and it wasn't the cat lol ). I still have the Pro 2006, had it apart many times for different problems, but running fine now. I see this video was made over a year ago, so I was wondering how the 2004 is working today if you still have it.
@@TrevorsBench That is a shame, you put so much work into it. If you ever get the time put a discriminator tap on it and download a free copy of DSDPlus 1.101 that program will decode about 7 digital formats. The only thing it won't do is decode encrypted traffic.
@@TrevorsBench I have had a Pro-2004 since 1988 and one of the best mods is to overclock the CPU with a crystal. You replace the ceramic oscillator (CX501) that has a value of 7.37 MHz with a 10 MHz crystal (CX501 looks like a blue M&M and is in the upper corner of the CPU board). I have done this to several 2004s and if you wrap the crystal with electrical tape then solder it to the solder side of the board it is so much easier then trying to put it in that corner where CX501 was ( I just wiggle CX501 back & forth till it breaks off, then I have its solder pads on the bottom of the board to solder to). ... This overclocking of the CPU nearly doubles the high scan speed to 27.03 channels a second and is a great addition to the other mods.
@@bradwicks5438 Awesome, thanks for sharing this mod tip. I'll confess, I'm not up on all the mods for the realistic scanners so hearing these is good for my other viewers fersure
@@TrevorsBench I forgot to add that it has to be an HC18/U spec crystal only and that if your Pro-2004 should then act flaky. That means that your CPU can't handle 10 MHz and you should go down to 9MHz. I, myself have tried other spec crystals & they cause strange behavior of the display & keyboard. But I have had a 10 MHz HC18/U crystal OC'ing one of my Pro-2004s and happily scanning away since 1991.
