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Question for Roger VE7LB
Both appreciating feedback and enjoying reading posts I would like to ask a few questions but thought these might be better under 'Chats' - but I cannot work out how to raise a 'chat' message.? Is there something I am missing.? One of my questions is - do you think anybody would be interested/find it useful to read about my activities in connection with investigating my recently 'gone deaf' FT101Z?? Your comments appreciated.? Alistair GM4ENF.
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Re: ft101 Problem
Before I go too far, look at this site for board recognition. You are looking for the RF unit, "front end"?board that is to the right of the VFO as viewed from the top of the radio with the lid off.? On Tue, Nov 30, 2021 at 6:58 PM Kenoli Oleari KB6EMG <kenoli@...> wrote:
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Re: ft101 Problem
Yeah ... that is all the wrong part to be looking at.? I’ll take the lid off one of mine and take A photo of it On Tue, Nov 30, 2021 at 4:05 PM Kenoli Oleari KB6EMG <kenoli@igcwrote: Here are some photos. |
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Re: ft101 Problem
If you smelled something, I would pull out the regulator board that is along side the RF power tube cage and inspect it for damage.? The other one to look at would be the board underneath that has high voltage parts, diodes and bias supply parts.? On Tue, Nov 30, 2021 at 8:06 AM Kenoli Oleari KB6EMG <kenoli@...> wrote: Thanks so much for the suggestion.? Is there an easy way to test? the FET?? I will check it if I can, or just order a new one and see what happens.? Anything else I could easily check.? I thought if the tube heaters didn't go on it would indicate a power supply failure and if they did it would indicate a problem elsewhere.? I did smell something briefly and then nothing.? I looke everywhere I could carefully and saw no indicators of a burn. |
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Re: ft101 Problem
Yes. The older 101 radios used a lamp as a fuse from the antenna jack to the receiver stages.? You still could just have a blown dual gate FET on the smaller board near the VFO.? That FET is mounted in a socket for a simple replacement as they can fail easily.? If it is bad, use a dual gate FET that has the built in diode protection.? On Mon, Nov 29, 2021 at 12:55 PM Kenoli Oleari KB6EMG <kenoli@...> wrote: No.? Is that the lamp next to the antenna connection? Does the lamp function as a fuse?? The lamp is not blown. |
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Re: 3 files uploaded
#file-notice
开云体育Roger – the page individual facings are 258mm x 182mm ? Regret my skills are insufficient to do stuff like stitching together scans.? The page content made it difficult to get the final jpgs anything like the same size of file – again I have no clues about how this might be achieved.? In particular my scanner had great difficulty with the ‘rear’ page of the folded document <the almost all white ‘address’ page>.? To get it to scan I had to use a much lower dpi. ? Hope you can make something of them and they are of use... ? Think I will stick to Morse code! ? Alistair GM4ENF ? Sent from for Windows ? From: Roger VE7LB
Sent: 28 November 2021 19:37 To: [email protected] Subject: Re: [Yaesu-FT-101] 3 files uploaded #file-notice ? Hi Alistair, ? |
Alistair GM4ENF
Bruce Collins
James Sawle (MD0MDI)