You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
Click here to find out how to win free radios from Retevis!
Good deal!. You have to remember where these came from, quality is an option. Test it against your dedicated tester and see how it stacks up. Looks good bro.
This particular one yes. But you have to remember if there is another cap or a resistor in parallel, this tester or any other tester...
Great! Glad you liked the video. Using the light bulb as a current limiter can save a lot of heart ache. And fuses and not to mention your life :)
Thanks for subscribing.
BTW
Also, I appreciate you replying to the thread.
I use the "like" feature and replies as a bench mark.
When I see either...
#21 Powering up unknown old tube equipment safely
Last Video, Enjoy.
In this video I show how I power up old equipment safely. Tube or solid state.
You should NEVER plug something into a mains outlet if you do not know the condition of the equipment.
Specially if it is vintage.
Disclaimer...
Really think it is more of a design issue than anything else. Have to remember there is not a lot of 220 gear out there. I think Kenwood was just chomping at the bit to get this radio on the market over looking critical designs flaws. One day when I can get a service manual I like to go in and...
#20 Kenwood TM 621A deaf 220 MHZ Receive
In this video I attempt to repair the 220 MHz receiver in a 621a. I have no service information on this rig but have repaired several of them. There are no free copies of the service manual online that I can find. I use the TM-721 block diagram to...
Naw you are up there too bro. I seen your videos :)
Always nice to have etchant on hand, or a good bread board to test circuits with.
Don't know why but I never got an alert that someone posted in this thread.
#19 Circuit board trace repair
In this video we look at repairing circuit boards that has had the traces lifted and broken off the board. Then we show how to repair a trace that has been blown due to a short circuit. I lost the final step showing prep to install the capacitor to the new pads...
Well thank you. Years of collecting lol.
The shop is always in a state of remodeling. Has changed a bit since I posted this. I built a new 12 x 16 work room and did a complete remodel of the shop. A month ago I added a tour of the shop/shack on my YouTube channel. It has changed a bit since...
Yep, the 940 is plagued with a lot of the same issues as with a lot of Kenwood radios of this error.
Connectors
Solder joints
Wax in PLL can ( wax is really not the problem, it soldering the pins while the wax creeps in the joints).
Foam under PLL board becomes very conductive.
AVR issue
As you...
#18 Kenwood TS 940 DOT on display Chasing down the rabbit hole Pt 1
In this video I have a TS-940 that has the dreaded dots on the display. After doing the regular checks for signals and voltages on the PLL's I decided to start looking for other issues that can cause this problem. So which is...
And the IF board.
I did get the tx/rx board installed. This restored all functions of the radio with exception of transmit and received. But now all commands work. Just a task of going in and check supply rails for what is and what is not working. But I feel it is something simple now. Perhaps...
#17 Mail Time
In this video I receive a nice package from one of my viewers.
I know of only one part he is sending.
What else is in the box? Lets find out.
Oh yes, it will go boom. I will not even turn it back on until I get it restored.
Going to start by disassemble, clean, polish, and reassemble. Replacing old tired parts as I go. Then do a full alignment. I am going to re-stuff the old caps so they look original. Will wash the out side of the...
In this video I found a National NC-155 sitting on my door step. The receiver is very dirty and shows a lot of signs of many years of abuse. Will it still work with out a lot of repair?
Lets find out.
The National NC-155 is a ham-bands-only receiver covering the 80, 40, 20, 15, 10 and 6...
That was done with a Dino-lite pro. Very handy little USB microscope. Not cheap but less than a Mantis..
http://www.microscope.com/dino-lite-pro-am4111t-1-3mp-digital-microscope.html?gclid=CjwKEAiAhPCyBRCtwMDS5tzT03gSJADZ8VjRboP305I-eFNjl0W36GPsNU9hzrTfHA5Aqs2WqgIDORoCi9zw_wcB
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.