106
How CB radio works / Why Export and new modern SSB CB radios have trashy receive
« on: July 22, 2016, 04:36:15 PM »
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107
Electronic Video Blog / #62 Mail Time
« on: July 20, 2016, 09:25:32 PM »
In this video we look at a couple of items sent in from viewers, Also we talk about a Cobra 2000 sent in for repair.
https://www.youtube.com/watch?v=bhT1KQV3SoU
Klondike Mike capacitor kits:
http://www.ebay.com/itm/Electrolytic-capacitor-kit-for-Cobra-2000GTL-PC497AB-/142035580095?hash=item2111faf4bf:g:-loAAOSwRJ9Xg9Rf
https://www.youtube.com/watch?v=bhT1KQV3SoU
Klondike Mike capacitor kits:
http://www.ebay.com/itm/Electrolytic-capacitor-kit-for-Cobra-2000GTL-PC497AB-/142035580095?hash=item2111faf4bf:g:-loAAOSwRJ9Xg9Rf
108
Electronic Video Blog / #61 Yaesu FT101 series Part 2 Few nuggets and on air listen
« on: July 14, 2016, 10:51:31 PM »
In this video we take a look at a few issues in the 10 dollar 101 before we get into a complete repair. This way we know better where we stand at and can now plan our attack.
https://www.youtube.com/watch?v=cVykfsrTm7Y
https://www.youtube.com/watch?v=cVykfsrTm7Y
109
Other Video Blogs / Alinco DR-605 no transmit power on VHF. Repairing the VHF power module.
« on: July 12, 2016, 09:51:31 PM »
In this video Mike at mikesradiorepair shows us how to repair a power module from an Alinco radio
https://www.youtube.com/watch?v=Zul9L-6gGXc
https://www.youtube.com/watch?v=Zul9L-6gGXc
110
Electronic Video Blog / #60 Shop Talk Mail items, 10 meter radios, solder station
« on: July 11, 2016, 09:39:11 PM »
In this video we just ramble on about the FT-101, Mail item, A few radios, Xtronic solder station. Click show More
https://www.youtube.com/watch?v=t7LQu670VC4
https://www.youtube.com/watch?v=t7LQu670VC4
111
Electronic Video Blog / #59 Yaesu FT-101 Series Part 1 Preliminary Test
« on: July 06, 2016, 06:01:27 PM »
#59 Yaesu FT-101 Series Part 1 Preliminary Test
In this video we look at the 10 dollar flea market Yaesu FT-101. I installed the missing boards and components and we give the radio a over look to see where it is electrically. Inside we find the Mylar capacitors on the audio board have heavy moister damage. We also discover the wrong audio board was previously installed.
https://www.youtube.com/watch?v=5XCze5lg6ig
Foxtango website
http://foxtango.org/foxtango001.htm
Ft-101 service manual:
http://www.foxtango.org/Manuals/FT-101_SVC_Manual.pdf
In this video we look at the 10 dollar flea market Yaesu FT-101. I installed the missing boards and components and we give the radio a over look to see where it is electrically. Inside we find the Mylar capacitors on the audio board have heavy moister damage. We also discover the wrong audio board was previously installed.
https://www.youtube.com/watch?v=5XCze5lg6ig
Foxtango website
http://foxtango.org/foxtango001.htm
Ft-101 service manual:
http://www.foxtango.org/Manuals/FT-101_SVC_Manual.pdf
112
Electronic Video Blog / #58 Flea Market find Yaesu FT-101 repair series
« on: July 01, 2016, 08:19:17 PM »
#58 Flea Market find Yaesu FT-101 repair series
In this video we have a look at a 101 purchased from a local flea market
https://www.youtube.com/watch?v=8Q_g1wDH3Us
Click here for full 33MB service manual
http://www.foxtango.org/Manuals/FT-101_SVC_Manual.pdf
Foxtango
http://foxtango.org/
In this video we have a look at a 101 purchased from a local flea market
https://www.youtube.com/watch?v=8Q_g1wDH3Us
Click here for full 33MB service manual
http://www.foxtango.org/Manuals/FT-101_SVC_Manual.pdf
Foxtango
http://foxtango.org/
113
Electronic Video Blog / #57 Shop Talk Fabricating a crystal oven cover B&K 2040
« on: June 28, 2016, 03:10:27 PM »
#57 Shop Talk Fabricating a crystal oven cover B&K 2040
In this video I fabricate a new crystal oven cover for my old B&K 2040. We do this with a modified Soldering iron tip.
https://www.youtube.com/watch?v=OJR4esoq0Y0
Check out Paul's video at Mr Carlson's Lab:
https://www.youtube.com/watch?v=79uD6XwBg5E
In this video I fabricate a new crystal oven cover for my old B&K 2040. We do this with a modified Soldering iron tip.
https://www.youtube.com/watch?v=OJR4esoq0Y0
Check out Paul's video at Mr Carlson's Lab:
https://www.youtube.com/watch?v=79uD6XwBg5E
114
Electronic Video Blog / #56 B&K 2040 Signal generator PLL issue
« on: June 27, 2016, 03:54:06 PM »
In this video we troubleshoot a very fine piece of vintage CB test gear. Inside the unit we find that the 3 74161 program divider chip failed in a cascade format. We also find that IC307 took out a resistor. After replacing the failed components we getthe unit back up and running.
https://www.youtube.com/watch?v=XXZj9IrcuyE
https://www.youtube.com/watch?v=XXZj9IrcuyE
115
Electronic Video Blog / #55 LCR ESR Transistor checker error and reprogram
« on: June 21, 2016, 06:31:38 PM »https://www.youtube.com/watch?v=J_LYhHUS26c
Paste this string into your command line and hit enter:
Code: [Select]
avrdude -c usbasp -p m328p -B 12.0 -e -U flash:w:"TransistorTester.hex":i -U eeprom:w:"TransistorTester.eep":i -U lfuse:w:0xF7:m -U hfuse:w:0xD9:m -U efuse:w:0x04:m
$20 LCR ESR Transistor checker project
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/
tom666 USBasp
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/msg810893/#msg810893
tom666 Arduino
http://www.eevblog.com/forum/testgear/lcr-t4-mtester-v2-07-lcr-meter-black-block-issue/msg879842/#msg879842
mauroh message with the ICSP connector on the banggood tester
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/msg854124/#msg854124
mauroh tester in the case
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/?action=dlattach;attach=202981
My error and try thread
http://gokarters.com/smf/index.php?topic=2582.0
116
Microcontrollers / transistor tester error and programming
« on: June 17, 2016, 03:33:37 PM »
Here is an error I get in avrdude
117
Electronic Video Blog / #54 Shop Talk Random Rambles
« on: June 14, 2016, 07:49:39 PM »
Just a short video on last couple of weeks. Been very busy here with work, wedding and shop time.
DIY transistor tester issue
Noise generator
Fluke 8520A
Browning R27 S23
EEVBlog $20 LCR ESR Transistor checker project
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/2050/
Contact information:
http://gokarters.com/smf/index.php?topic=2549.0
https://www.youtube.com/watch?v=Mov-Eq3s4_4
DIY transistor tester issue
Noise generator
Fluke 8520A
Browning R27 S23
EEVBlog $20 LCR ESR Transistor checker project
http://www.eevblog.com/forum/testgear/$20-lcr-esr-transistor-checker-project/2050/
Contact information:
http://gokarters.com/smf/index.php?topic=2549.0
https://www.youtube.com/watch?v=Mov-Eq3s4_4
118
Electronic Video Blog / #53 HP 410A vtvm repair part 1
« on: May 28, 2016, 06:04:41 PM »
In this video we go through this old HP 410a VTVM and replace all the paper capacitors.
We also have to fabricate a new DC probe since the original is damaged.
https://www.youtube.com/watch?v=N7DpyfHZ3cM
Manual link:
http://www.hparchive.com/Manuals/HP-410A-Manual.pdf
Capacitors and resistors:
http://www.justradios.com/
Mr. Carlson's Lab, Are your capacitors installed backwards?:
https://www.youtube.com/watch?v=BnR_DLd1PDI
We also have to fabricate a new DC probe since the original is damaged.
https://www.youtube.com/watch?v=N7DpyfHZ3cM
Manual link:
http://www.hparchive.com/Manuals/HP-410A-Manual.pdf
Capacitors and resistors:
http://www.justradios.com/
Mr. Carlson's Lab, Are your capacitors installed backwards?:
https://www.youtube.com/watch?v=BnR_DLd1PDI
119
Electronic Video Blog / #52 Shop Talk Sencore CS61 - Amscope- Fluke 8520A update
« on: May 18, 2016, 05:17:43 AM »120
Electronic Video Blog / #51 Fluke 8520A How far does this rabbit hole go? Part 1
« on: May 15, 2016, 08:26:52 PM »
#51 Fluke 8520A How far does this rabbit hole go? Part 1
In part 1of this video we tackle a few tantalum capacitors that has gone dead short. We also have to replace a faulty LM340T-12 regulator after checking the voltage rails. Just how many problems does this "Working EBay Find" have?
I am at a stand still till I do more research...
https://www.youtube.com/watch?v=ULQroWJUZdw
Fluke 8520A service manual:
http://assets.fluke.com/manuals/8520A___smeng0100.pdf
In the first picture we have to replave C238 due it is shorted. We also had to replace R256 and 257
Here we finf C450 is also shorted. This was dragging the +15 volt rail down.
We find that U704 has a dead short from input to output. This is a LM340T-12
When you boot the 8520A on it is showing a voltage on the display. This should show"000"
If you hit 2-wire or 4-wire to test the Ohm setting you will get Error 1. This means high voltage when selecting ohms scale
After repairing the voltage rails we still have the error 1. But if you pull J19 we get no errors. But ofcourse the meter does not function.
And again with J19 removed we can go into ohms mode.
So with J19 removed the error goes away. The unit does not function but it looks like we are closer to the problem.
We still have to trouble shoot error code 01.
Err01 HV - High voltage present with ohms function selected.
In part 1of this video we tackle a few tantalum capacitors that has gone dead short. We also have to replace a faulty LM340T-12 regulator after checking the voltage rails. Just how many problems does this "Working EBay Find" have?
I am at a stand still till I do more research...
https://www.youtube.com/watch?v=ULQroWJUZdw
Fluke 8520A service manual:
http://assets.fluke.com/manuals/8520A___smeng0100.pdf
In the first picture we have to replave C238 due it is shorted. We also had to replace R256 and 257
Here we finf C450 is also shorted. This was dragging the +15 volt rail down.
We find that U704 has a dead short from input to output. This is a LM340T-12
When you boot the 8520A on it is showing a voltage on the display. This should show"000"
If you hit 2-wire or 4-wire to test the Ohm setting you will get Error 1. This means high voltage when selecting ohms scale
After repairing the voltage rails we still have the error 1. But if you pull J19 we get no errors. But ofcourse the meter does not function.
And again with J19 removed we can go into ohms mode.
So with J19 removed the error goes away. The unit does not function but it looks like we are closer to the problem.
We still have to trouble shoot error code 01.
Err01 HV - High voltage present with ohms function selected.