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Apologies.I have bummed steered you that one, I was getting it mixed up with ch9 taking the channel readout away. I'm just a beginner too trying to help.
I asking those question because just feel it could be related to the mic or mics path and really make sure that's right before looking for...
The missing segments could be from a dirty channel selector.
You mentioned before that it doesn't seem to switch from PA to radio but you had checked the switch was working with a DMM.
When you switch to PA do you loose your channel readout like your supposed to? and likewise do you get your...
Mines 8060053 with the dodgy glue.
If I misinterpreted the serial number please let me know.
Edit: Chatgpt says June 1988 for my serial number.
Yeah I think you might know more than others re: board differences. I've spent hours googling ts440 info as a beginner and haven't seen any...
Thanks Yipyip46 for the tips. This radio I had been working on had a lot of dry solder joints particularly on the IF Board, PLL board and RF board as well. Had to replace multiple components with legs eaten off by the brown glue on RF board (someone had already removed glue from PLL Board) as...
pc122 troubleshooting thread with no tx/rx:
https://www.worldwidedx.com/threads/pc-122-troubleshooting.252728/
robalo mentions in that thread:
"C101 - takes out AN612. Kills 1/2 the IF for anything AM or SSB..."
Have you contact/circuit board cleaner sprayed everything/connectors etc and...
I dont know if this accurate but google ai is telling me:
IC2 (uPD2824 PLL) pin 16 is the power supply pin and should be 5v dc. This is supplied via IC5. If its missing its 5v then IC5 could be blown.
IC2 (uPD2824 PLL) pin 15 is the lock pin, if PLL is not locked it will be low (0-0.3v dc) and...
Thanks for the encouragement. Yeah Brandon is all star in his support, above and beyond. Tech5 etc. So is anyone else that helps. As a beginner I like hearing any response! Great bunch of knowledgeable helpful people on this forum.
Thanks, how could we bin a ts440s! I think I'm stuck in the...
Should of taken your advice, if its working leave it alone!! (mantra for rest of my life now...) Replaced IC3, didnt realise IF top board had a broken hinge screws and it slid forward while testing - its metal chassis screw contacting the outside shell of electrolytic C59 on front control board...
After comparing the PDF to my HTML copy I realized the HTML version is better formatted and slightly more complete (not cut off on end of pages). You have to unzip to a directory and then open the local HTML page "HOME _ 858ssb.htm"
Thanks, I managed to save his website using the internet archive past snapshots but this PDF is more convenient. The legacy of unit 399 will live on forever and we will always remember him for his work on the 858 chassis.
Only seen a mod a few months ago a mod the HTX100 I think to convert CW to LSB. Didnt look that hard either. Remember reading years ago they were like a HR2510 but had a better filter on SSB as per AudioShocks pic. They were known for the LCD display slowly bleeding black with time from the...
Your the main reason I did stick with it, you gave me enough mentoring, motivation and insight to go for it. I can never thank you enough. Its RX does have some weird noise introduced < 500khz but everywhere else sounds fine.I have the IC on its way so I'll chuck it in. I still gotta work on...
Hey Brandon and anyone else watching this thread :)
Thought I'd give an update. I took a break a month ago after feeling a bit flat with it. But I decided to trace all PLL board cmos IC voltages to get a feel if it was financially viable as you were saying and I decided to keep working on it...
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