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—碍别苍辞濒颈

On Feb 14, 2023, at 8:25 PM, Richard kn7sfz <kn7sfz@...> wrote:

Alistair, I see the schematic attachment didn't make it intact, so if you'd like to send me an email direct, I'll get it to you.? It is 6 megs, so hope your email provider can handle that.

Richard?

kn7sfz@...

On 2/13/2023 5:00 PM, Richard kn7sfz via groups.io wrote:

Hi Alistair,

I tried to find a quality manual for your 101Z online but they are all low resolution, however it is obvious that your RF board is different from the one in the FT-101EX. The good news is that their RF MOSFET amplifiers are basically the same, yours being the 3SK51 and mine the 3SK40, either of which can be replaced by the $6 NET 454 off Amazon, which I used to bring mine back to life.

I have attached a high res copy of the 101E schematic and you can see the 3SK40 transistor in the outlined PB-1181 RF board.? Sorry, I have no way of highlighting it.? It is socketed, so that made replacement quite easy.? I'm sure the transistor is socketed in your board as well.? Great care must be taken that you get each of the four leads in their proper place when installing the new transistor...very difficult for these old eyes, even using a magnifying visor.

Good luck on your project and hope to hear of your success,

Richard kn7sfz

On 2/13/2023 8:16 AM, Alistair GM4ENF via groups.io wrote:

Hello Richard - good you got to the bottom of problem.? I am interested in the subject; can you post a copy of the circuit diagram highlighting the semiconductor you replaced?? May help me to cure my own hard of hearing 101Z
Alistair (Al) GM4ENF