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Re: PA board
开云体育Hi Reg Once the burnt area has been cleaned you can get an idea of ??how to proceed. I'll tell you how I did it : If there are no SMD components in the area (or even a few of them) but only discrete ones, you can use a little rasp to make a nice hole (hi) and remove the entire burned part of the PCB. Then use a piece of copper-plated fiberglass on one side, make holes to place the discrete components (the coil for example); the copper side goes towards the drain of the mosfet so as to have a strong and stable soldering; basically rebuild all the links that were blown away. It may seem unprofessional but I assure you that between the
abundant welds and the metal screen the job will also be well done
aesthetically and above all you will recover a radio that you
cannot use on VHF Once you have made all the connections and verified the connections, redo the bias and try everything again. With this technique (shaping a piece of copper PCB in the hole) I repaired 2 boards, one of an ICOM-PW1 and a final stage of an ICOM-775, they have never given more problems. It's an attempt you can make. Let us know about your repair. 73s, Pasquale IW0HEX
Il 20/09/2024 07:17, Reg Du Toit ha
scritto:
Hi Pasquale I've spoken to the owner and he will clean the area around the coil and then take photos We both have the flu and he'll do it as soon as hr feels better Thank you very much for all your help and any other we can get We would still like to find a replacement PA board if possible Many thanks, 73, Reg |