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Electronic Video Blog / 84 Christmas in the shop and a few updates
« on: December 10, 2016, 05:30:50 PM »
84 Christmas in the shop and a few updates
In this video we receive a nice gift from Mikes Radio Repair. We also look at the display issue for the HTX-100 and a few updates.
In this video we receive a nice gift from Mikes Radio Repair. We also look at the display issue for the HTX-100 and a few updates.
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Electronic Video Blog / #83 Back to Basic Radio Troubleshooting
« on: December 05, 2016, 10:41:39 PM »
#83 Back to Basic Radio Troubleshooting
In this video we take a look at a 5 dollar black box radio. CB radios are a good learning platform if ytou are just starting out in radio electronics. They can be bought for a few bucks. This radio was manufactured over seas and has been reproduced under many names. It uses the standard export EPT3600 board. Can we make the radio work again? Lets find out.
Link to schematic and service information
http://www.cbtricks.com/radios/galaxy/dx33hml/index.htm
Contact information
http://gokarters.com/smf/index.php?topic=2549.0
https://www.youtube.com/watch?v=jga0oTGjLOw
In this video we take a look at a 5 dollar black box radio. CB radios are a good learning platform if ytou are just starting out in radio electronics. They can be bought for a few bucks. This radio was manufactured over seas and has been reproduced under many names. It uses the standard export EPT3600 board. Can we make the radio work again? Lets find out.
Link to schematic and service information
http://www.cbtricks.com/radios/galaxy/dx33hml/index.htm
Contact information
http://gokarters.com/smf/index.php?topic=2549.0
https://www.youtube.com/watch?v=jga0oTGjLOw
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Electronic Video Blog / #82 Superstar T747 Mic Test Center Repair
« on: December 04, 2016, 08:48:50 PM »
In this video we troubleshoot a noise problem with in a T747 mic test center(click show more)
TBA820M data sheet
http://www.fieros.de/philips/tba820m.pdf
https://www.youtube.com/watch?v=i8e0kckKF04
TBA820M data sheet
http://www.fieros.de/philips/tba820m.pdf
https://www.youtube.com/watch?v=i8e0kckKF04
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Test Equipment / JDR 3500 /Dick Smith 35 MHz scope repair thread
« on: December 02, 2016, 07:19:16 AM »
Here we have a JDR 3500 35 MHz 2 channel scope. This unit came in with no trace. After looking I found Q8 (S2D401) shorted.
This was replaced and other components tested. This unit uses some type of switch mode power supply for the high voltage and heater. Power comes from 15 volts DC into the circuit.
I really do not know that much about these switching high voltage supplies
Manual:
http://nebula.deanza.edu:16080/~norona/3500_oscilloscope_files/JDR3500%20oscilloscope.pdf
This was replaced and other components tested. This unit uses some type of switch mode power supply for the high voltage and heater. Power comes from 15 volts DC into the circuit.
I really do not know that much about these switching high voltage supplies
Manual:
http://nebula.deanza.edu:16080/~norona/3500_oscilloscope_files/JDR3500%20oscilloscope.pdf
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Electronic Video Blog / #81 Shop Talk Homebrew Test Gear PT 2
« on: November 27, 2016, 02:32:27 PM »
In this video we throw a QRP microvolt wattmeter together out of junk parts.
This meter has two ranges. 0-1 and 0-10 watt settings.
https://www.youtube.com/watch?v=dDxoCLcdT4I
This meter has two ranges. 0-1 and 0-10 watt settings.
https://www.youtube.com/watch?v=dDxoCLcdT4I
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Other Electronics and repair / PACE Rework and Repair "Damage Repair"
« on: November 26, 2016, 10:43:32 AM »83
Electronic Video Blog / #80 Realistic HTX-100 diagnostic and repair
« on: November 25, 2016, 04:43:30 PM »
#80 Realistic HTX-100 diagnostic and repair
In this video we take a donor radio and do a little troubleshooting to see just how bad a shape it is in. Since I already have one of these I will probably give this radio away to someone in need.
Direct link to video on YouTube
https://www.youtube.com/watch?v=jBDh1jpoiyw
In this video we take a donor radio and do a little troubleshooting to see just how bad a shape it is in. Since I already have one of these I will probably give this radio away to someone in need.
Direct link to video on YouTube
https://www.youtube.com/watch?v=jBDh1jpoiyw
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Electronic Video Blog / #79 Eico Model 147A Repair and Test
« on: November 19, 2016, 03:07:01 PM »
#79 Eico Model 147A Repair and Test
In todays video we have a look at repairing our Eico 147A. Click show more.
Mike Radio Repair
https://www.youtube.com/channel/UCfi5fp3qsXeqSbsLAIKU6Dw
Direct link to YouTube
https://www.youtube.com/watch?v=i6QYtjoqYig
In todays video we have a look at repairing our Eico 147A. Click show more.
Mike Radio Repair
https://www.youtube.com/channel/UCfi5fp3qsXeqSbsLAIKU6Dw
Direct link to YouTube
https://www.youtube.com/watch?v=i6QYtjoqYig
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Electronic Video Blog / #78 Mail Time
« on: November 15, 2016, 08:11:51 PM »
#78 Mail Time
Today in this video we open a few mail items that came in today. Click show more below.
https://www.youtube.com/watch?v=p94K4ZuS3EY
Eico 147 service manual
http://bama.edebris.com/manuals/eico/147/
Mike Radio Repair
https://www.youtube.com/channel/UCfi5fp3qsXeqSbsLAIKU6Dw
Today in this video we open a few mail items that came in today. Click show more below.
https://www.youtube.com/watch?v=p94K4ZuS3EY
Eico 147 service manual
http://bama.edebris.com/manuals/eico/147/
Mike Radio Repair
https://www.youtube.com/channel/UCfi5fp3qsXeqSbsLAIKU6Dw
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Electronic Video Blog / #77 Shop Talk Build Your Own Test Gear
« on: November 13, 2016, 04:56:20 PM »
#77 Shop Talk Build Your Own Test Gear
Link to original design and discussion on EEVBlog
http://www.eevblog.com/forum/projects/5-transistor-esr-meter-design/
Alan w2aew review
https://www.youtube.com/watch?v=3fiUZZlveS0
Contact information
http://gokarters.com/smf/index.php?topic=2549.0
https://www.youtube.com/watch?v=PZoZ0x4ISKQ
Link to original design and discussion on EEVBlog
http://www.eevblog.com/forum/projects/5-transistor-esr-meter-design/
Alan w2aew review
https://www.youtube.com/watch?v=3fiUZZlveS0
Contact information
http://gokarters.com/smf/index.php?topic=2549.0
https://www.youtube.com/watch?v=PZoZ0x4ISKQ
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Basic beginner Electronics / FT-101 speaker
« on: November 12, 2016, 05:40:21 PM »
Posting for a friend
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Other Video Blogs / Nixie Tube Digital Display for Receivers Mr Carlsons Lab
« on: November 01, 2016, 06:45:43 AM »
Published on Oct 9, 2016
Watch the build process of a Nixie Tube digital display for older receivers. See the design of a scratch built circuit board, and the thought process involved in component placement and population. This is the final part of this Nixie tube series. For the earlier parts of the series, click the "SHOW MORE" tab, right below this writing.
HP paper for toner transfer. UPC # is: 884962 248607
Previous videos in this series:
Part 1 of this series: https://youtu.be/jytF5bvPGcU
Part 2 of this series: https://youtu.be/tb1-EF_F2Rk
Part 3 of this series: https://youtu.be/yAx4ehqRSPE
TDR Video (for understanding signal reflections) https://youtu.be/I1gfUNh5PJQ
https://www.youtube.com/watch?v=tSu0xibIdyM
Watch the build process of a Nixie Tube digital display for older receivers. See the design of a scratch built circuit board, and the thought process involved in component placement and population. This is the final part of this Nixie tube series. For the earlier parts of the series, click the "SHOW MORE" tab, right below this writing.
HP paper for toner transfer. UPC # is: 884962 248607
Previous videos in this series:
Part 1 of this series: https://youtu.be/jytF5bvPGcU
Part 2 of this series: https://youtu.be/tb1-EF_F2Rk
Part 3 of this series: https://youtu.be/yAx4ehqRSPE
TDR Video (for understanding signal reflections) https://youtu.be/I1gfUNh5PJQ
https://www.youtube.com/watch?v=tSu0xibIdyM
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Other Video Blogs / Design and Build a Buffer Circuit, Tube and Transistor Mr Carlson's Lab
« on: November 01, 2016, 06:42:06 AM »
Published on Oct 31, 2016
How to design, build and install a buffer circuit into a receiver, so you can give it a digital display. Learn how to locate the oscillator circuit in a receiver without a schematic, using a new, and older vacuum tube oscilloscope. Lot's of other "bonus" repair information as well. See how the rebuilt receiver performs with a digital Nixie Tube display attached to it.
https://www.youtube.com/watch?v=goo9n-bIhGM
How to design, build and install a buffer circuit into a receiver, so you can give it a digital display. Learn how to locate the oscillator circuit in a receiver without a schematic, using a new, and older vacuum tube oscilloscope. Lot's of other "bonus" repair information as well. See how the rebuilt receiver performs with a digital Nixie Tube display attached to it.
https://www.youtube.com/watch?v=goo9n-bIhGM
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Electronic Video Blog / #75 Hurricane Matthew the aftermath
« on: October 09, 2016, 02:18:52 PM »
#75 Hurricane Matthew the aftermath
Just a short video of after the hurricane.
Click SHOW MORE TAB
My heart goes out to the ones that lost family during this hurricane,
Below is a link to what happened here in 1999. Will history repeat?
Flood of the century (1999)
https://www.youtube.com/watch?v=NFkxBs9M4fY
https://www.youtube.com/watch?v=jEknHZaNjAA
Just a short video of after the hurricane.
Click SHOW MORE TAB
My heart goes out to the ones that lost family during this hurricane,
Below is a link to what happened here in 1999. Will history repeat?
Flood of the century (1999)
https://www.youtube.com/watch?v=NFkxBs9M4fY
https://www.youtube.com/watch?v=jEknHZaNjAA