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Just got home a bit ago. Great to visit family. :)
So.. I desoldered the legs of the diode, and it checked out ok on the final side... To be sure, I desoldered the diode on the driver side, and it checked out exactly the same... :/ Both working and not letting anything through when you reverse...
I will give it a go.. A shame it probably took out the final when even I would key it for a second at a time.. :( So with D51 toast, is there a reason why they mount it up on the transistor screw? I do have some 4148 diodes, so for a temp solution I can do that... I will report back to you about...
I am a bit too tired to find where D66 and D67 was. I just seen the two that are screwed onto the driver/final, but that one is D51.
It still did the 150 mA and climbing and though it starts out at a lower value when you key up, it climbs... This was on Channel 19 USB. It got much worse on CH...
Back inside... Bleh.. New final didnt do it. Behaves the same.
Even with the Tantalum C179 replaced, it behaves the same. The milliamps is now up to 150 mA, and adjusting the pot does little to no effect.
On AM, the meter on the radio itself does back swing a little on AM when you talk, but on SSB it goes forward about quarter of the way.
Just got back in from the garage a moment ago.
I should of pulled the final out and tested it. Seems dead. :( Should of known as they had the AM power pot...
Hello,
After recapping the radio, the radio works great on receive and can hear stations no problem. The issue is when you transmit, it is very low AM power, down to under a watt. SSB Never sees passed the same. To be sure, the Driver Bias you can adjust, and set it to the 40mA, but the Final...
Just have to be more careful on how you use Lithium. Have a friend going on 8 years with his setup in car audio. No issues.
A few years ago someone else in the car audio community tried blaming a lithium battery company for the fire that erupted and burned his car down... I asked for him to...
For today I just did a row of capacitors along the back. Want to do the recap in sections to be sure it still works after powering up and that I didn't mess something up. :P
Just taking my time and dont want to burn up traces or accidentally burn up the plastic of a nearby wire under the...
The meter is stuck on the mobile radio, but I will be careful and to get it to break free when I pop the covers off another day, but for now, I am geared towards on recapping the base radio first.
100% In the last few years I did buy Nichicon caps off Mouser .com . Just would buy various values and try to keep them stocked up. That base President Radio is too great for it not to be recapped. :) I did clean off the dust from the inside which had to of been the last 20+ years worth lol...
Today my brother sent me a picture of a couple of radios and asked if I wanted to throw a bid at them. He and his family were at one of the local auctions a couple of towns over. I of course wanted them! A bit sad that nobody even wanted to throw a bid at them, so my sister in law got them for...
My old desoldering gun I picked up in 2017 does ok. I think its a ZD-985. I will never go back to a desolder wick unless it is for ground areas on a board with larger solder to remove. :)
Riiiiiiiiiiiiiise from your grave. :)
I never seen this post from Robb. May he rest in peace.
And I 100% agree with rob on "The common complaint is that it was off frequency on SSB mode, and only improved slightly after thirty minutes of constant conversation back and forth."
This is what led...
Riiiiiiiiiiiise from your grave. :)
I wonder if the older radios like the TRC-451 and the Cobra 146 GTL can benefit from the ALC mod? Since the TRC-465 is just a shrunk version of the radio.
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