Important Note: Although I have first-hand knowledge of the damaged circuitry and the necessary repairs, I only have second-hand knowledge as to the cause of damage, which was acquired by interviewing customers about their station setups and operating practices. Icom IC Mods.Sometimes, components on the RF Unit may also be affected. Icom IC-756 Pro II CCFL to LED Part 1 of 3 Back light Conversion. Certain laws associated with the international community will not legally allow such a sale - sorry. Sorry - but I cannot distribute this out of the USA. Jumpers matrix located near IC What to do: Remove bottom cover of IC You have to remove DSP board get it up careful and look for IC and line of jumpers little green bugs. Do you have a web browser? Notice: ICOM can not guarantee specification when expand frequency.
![icom 756 pro ii problems icom 756 pro ii problems](http://www.philipstorr.id.au/radio/seven/ic756/ic756_00.jpg)
I can send you this information on disk or paper. If NOT, I recommend using the manual with photos and diagrams. These are micro-components that you will be working with and you will need a large magnifying lens to view the work under. If you have any surface mount soldering and desoldering experiencethen it should be no problem. With a step by step color photos showing the modifictions. Your name or email address: Password: Forgot your password? Register for a free QRZ account.Yes you can modify the for full frequency coverage.
Icom 756 pro ii problems driver#
Does this driver board inside add RF noise on bands? You must log in or sign up to reply here.
Icom 756 pro ii problems mod#
Is the LCD brightness still adjustable through the menu after the mod? I know, lots of questions, but it is a nice mod and like the idea! VE1ICFeb 16, Very cool Max Ripley. You don't need to send me the entire radio, only the front panel. The cost of shipping the front panel both ways is not included. I can upgrade your radios display to a nice bright LED backlight that will make your radio look like new, and last for years. While the transistor can be replaced, the coil is now obsolete. In the case of the PRO radios, this results in either a blown transistor or open inverter coil. This puts unnecessary stress on the voltage inverter circuit. Is the display in your PRO series radio starting to dim? Does it take five or ten minutes or more to reach full brightness? Le gendarme et les gendarmettesĪfter this time, the tube usually only reaches half its original brightness.
![icom 756 pro ii problems icom 756 pro ii problems](http://www.philipstorr.id.au/radio/seven/ic756/ic756_06.jpg)
The end result was awesome One of the pics here is the filter as modeled in software, the violet curve is before mods, the white curve is after mods. This moves the knee of the filter from 5. Used kohler engines craigslistĬhange C15 to a pF disc.
Icom 756 pro ii problems manuals#
I checked the manuals and board layouts against each other, and while the filter units in the standard and Pro II are physically a little different, the circuit was the same. He came up with a few capacitor changes to alter the upper end of the filter response to fix the problem in the Pro II. He had access to some filter design software, and modeled the 80m filter to see where the problem was.
![icom 756 pro ii problems icom 756 pro ii problems](https://i.ytimg.com/vi/366i9-QP3Bw/maxresdefault.jpg)
Another ham I was talking to on the internet had the IC Pro II and modified his for 60m coverage as I did, and had the same problem with low output power. Here's the info for the first phase of the modification I found that the band matrix is setup to use the 80m low pass filter up to 6. First, the transmitter has to be opened up for general coverage operation.