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Re: ft101 Problem
Can you give me a better location description.? I have found the VFO circuit board (1056) inside the box that holds the main VFO adjustment capacitor but see no removable FETs anywhere in the area.? There are two soldered? active devices on the board but they look like transistors.
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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. |
Re: ft101 Problem
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.
--Kenoli |
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. |
File Notifications
#file-notice
Yaesu-FT-101@groups.io Notification
The following files have been updated in the Files area of the Yaesu-FT-101@groups.io group. By: James Sawle (MD0MDI) <james@...> Description: The following files have been updated in the Files area of the Yaesu-FT-101@groups.io group. By: James Sawle (MD0MDI) <james@...> Description: |
File /07 - FT-101ZD Files/Yaesu FT-101ZD Mark 0 - Brochure (American).pdf uploaded
#file-notice
Yaesu-FT-101@groups.io Notification
The following files have been uploaded to the Files area of the Yaesu-FT-101@groups.io group. By: James Sawle (MD0MDI) <james@...> Description: |
ft101 Problem
I have an FT-101 that I used back in the 70s.? I was trying it out today with a long wire antenna.? I fired it up, tuned it in, everything went fine.? Then I moved it from one surface to another while it was on.? Bad Idea I guess.? It went dead as I was moving it.? There was a slight smell of burned electronics just for a second.? The smell didn't persist.
I checked and the power input fuse was blown.??I pulled off the case and examined it as carefully as I could.? Looked all through the power supply.? No sign of any arc or burned component.? Same everywhere else I could see.? At this point no smell of burned electronics. I got another fuse and decided to give it a try without the mic to make sure it didn't slip into transmit mode. Lights and fan came on, but no reception.? Silence.? Nothing on the s-meter. Anyone have any thoughts? --Kenoli |
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: Yaesu-FT-101@groups.io Subject: Re: [Yaesu-FT-101] 3 files uploaded #file-notice ? Hi Alistair, ? |
Re: 3 files uploaded
#file-notice
Hi Alistair,
Thanks for all of the brochure scans and uploads. Just wondering what is the actual size of one of the 4 page photos? That would be a help in putting all the single pages together into a brochure. 73 Roger VE7LB |
3 files uploaded
#file-notice
Yaesu-FT-101@groups.io Notification
The following files have been uploaded to the Files area of the Yaesu-FT-101@groups.io group.
By: Alistair GM4ENF <alistairfyffe@...> Description: |
Re: FT-101ZD Brochure?
Allistair,
Yes the front page is there OK and it is still high res. I am not sure how many more 30 Mb pages you have. If it is 10 or less go ahead and upload them to the same folder. I'll leave them there, as is, for a week or two and then combine them into a more reasonably sized pdf. 73 Roger VE7LB |
Re: FT-101ZD Brochure?
Alistair That size of file will be too big to attach to a post and it will be too big to attach to a direct email as well. If you can do a file share and send the link to the OP,?that would be a successfully way.? 73 Don ve3ids On Fri., Nov. 26, 2021, 2:39 a.m. Alistair GM4ENF via , <alistairfyffe=btinternet.com@groups.io> wrote: I don't know much about the details behind scanning but I scanned the brochure page at 2400dpi with my Epson V750 scanner.? The original scan was over 1G which I reduced to around 30M before uploading it - Maybe the 'system' resizes images to prevent swamping (which would be understandable). I use the V750 to scan medium format transparencies, some for publication, and know that at 2400dpi the scanner is looking for detail not there on the originals!? If you are still interested maybe direct emailing might give you what you are looking for.? Alistair GM4ENF |