www.shaneburrell.com Telecom – Electronics – HAM Radio – Test Equipment – Rescue

29Jun/170

Haimer Repair & Vise Jaws Part 3

Doom, Haimer Repair & Vise Jaws Part 3

Fixing issues while making some vice jaws.

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18Jun/170

Fanuc Keysheet Replacement DIY HowTo

Fanuc Keysheet Replacement DIY HowTo

I have a Excel PMC 5V20 Vertical Machining Center with a Fanuc OM control. Keys below the CRT were busted and damaged. After purchasing a new keysheet, I verified fitment. The keysheets for the Fanuc are glued on and need to be removed and reapplied.

After cleaning the front of the Fanuc bezel, I replaced the keysheet and the control looks like brand new. In conclusion, I'm really happy with the results and the PCB board is again protected from coolant and other contaminates.

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8Nov/160

Motorola R2210B/HS Service T/R Part 3.

I purchased a non-working Motorola R2210B/HS service monitor just to take a look and see if it was repairable.   In Part 3, I fix and test all the issues found and end up with a working service monitor.

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24Aug/160

Motorola R2210B/HS Service T/R Part 1.

I purchased a non-working Motorola R2210B/HS service monitor just to take a look and see if it was repairable.  Part 1 of the video is the teardown of the basic unit and troubleshooting the LVPS section.

 

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23Jul/160

Wouxun Teardown and Repair Basics

Video of how to take the Wouxun apart, complete down to the board level. Overview of repair areas.

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4Mar/160

GC-1720 TLB – Steep Gravel Drive

Gravel, Winter GC-1720

About 12 years ago I constructed a 285 foot gravel drive down to my shop with a Massey Ferguson 1250. It was smooth enough to get cars, trucks, and trailers down with ease. Over the years I maintained it by keeping the crown cut and compaction of the travel lanes broken up.   Last year the erosion of the left track outran my maintenance and it became a 4x4 only drive.  I recently aquired a GC-1720 Sub-Compact Tractor to fix an maintain the property.

The first step in the revitalization of the drive way was to use a 5 foot rotary cutter to remove all the growth next to the driveway.  That also required some some backhoe work to remove some of the larger root systems of bushes and trees.

GC1720 Backhoe Removal

GC1720 Backhoe Removal

I used a 4 ft box blade at a forward angle making 2-3 trips over the same area to break up the existing gravel.  This process filled many of the pot holes and some of the left track.  Areas that had not been washed out, the road-bond (Gravel / Fines)  looked fresh with the vegetation removed.

 

Drain Grading

Drain Grading

 

With a box-blade, it just requires patience to get the ground broken up especially with a sub compact tractor.  I was using a new Massey Ferguson GC-1720 TLB. Lesson's learned on the GC-1720 TLB below:

  • 4 Ft Box Blade is the Max.
  • 5 Ft Scraper Blade is ideal.
  • 4 Ft Rotary Blade is ideal.
  • Backhoe Float takes getting used to but it does wonders for flat ditches/trenches and for leveling fill.  I really like it.
  • No 3 Pt position control.  This hasn't been an issue per say but took a day or so of getting used to.  The 3 points works like a normal hydro spool. There is a down valve to help with controlling flow on downward action of the 3 point.
  • The seat transition is hit or miss. Sometimes it does exactly what you intend and other times its a downright PIA.
  • Fuel consumption is great.  About 6 gallons for two days work.
  • Backhoe removal is less than 10 minutes. Surprisingly easy and fast.  Just watch where you put the hydro lines.
  • PTO shaft has a plastic cover with 13MM (1/2") Screws that need to be removed to use the PTO.

Once the ground was un-compacted the box can be leveled and its easy to pull a full box wherever you need it.  The GC 1720 doesn't have positional control but does have control of the lower speed.   You just have to be careful with bringing the blade back up as it is always full speed.

I did ditch cutting by putting the box blade at a sharp angle and "driving the ditch".  After cutting ditch areas down I used the front end loader to move excess to the center and eroded areas to "level" it up.  I made a few finish passes with the box at slight angle to crown the surface.

I plan on putting down an additional 4" of road bond during the spring time.

 

 

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31Jul/150

IC-208H ICOM Teardown – Salt Water + Explosion

ICOM IC-208H Background

Looking for something to play with I was the lucky bidder on a non-working IC-208H ICOM Dual Bander radio on Ebay.  It looked ok but was listed as non-working.  They also disclosed it would not power all.  All of these things were correct.  A more accurate description would have been "Used on the show Deadliest Catch but the boat sank to the bottom.  Recovered 2 months later".

Maybe the source of the IC-208H?

Maybe the source of this radio?

I'm guessing it was installed on a boat and wouldn't surprise me if said boat was at the bottom when this radio was removed.  The head unit was in great shape so not a complete loss.

Since there was severe damage from the apparent reverse hookup and water damage it wasn't something I could or would repair.  I did end up with some spare parts, a good IC-208H head, new power cord, and a working Mic.

The mic connector was completely trashed with green tented heavy corrosion.  Inside both side of the board had been exposed to water and dirt. Even without the badly damaged PCB craters it was deemed a lost cause as soon as I opened the case.  Stay tuned for a teardown of the IC-208H head unit as this appears to be in great shape and I want to see if and how it ticks before parting with it.

ICOM IC-208H Teardown Video

Teardown video of a beaten down ICOM IC-208H.  I'd really like to know what this radio has seen.

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15Jul/150

Wouxun KG-UV2D & KG-UV3D Fix – Flash Repair

Wouxun Flash Issue Background

Wouxun's seem to either wear the flash chip out or are made with a bad batch of parts. Eventually all of them I've owned prior and everyone I know throws it in the trash. Below is a video of how to do the repair and its an easy fix. Wouxun used a very low write count part but there are better options as a direct replacement. The replacement part is a 24C64 found just about everywhere for under $1.   Please repair these when possible and if you are unable or unwilling, hand it over to a new ham or send to an old one to be repaired.

I recommend using a hot air station but it is possible to carefully cut leads with cutters for parts replacement.  When using cutters be sure to not rip any traces from the board.  Go very slow and use a good tool.  An alternative method is to heat and lift one lead a time. Mouser and Digikey both have alternatives for this part by searching for the 24C64.  Right now links to these parts are as follows:

DigiKey Search Results

Mouser Search Results

Wouxun Repair Video

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13Jul/150

BK Precision 1711 DC Power Supply Repair.

I purchased a BK Precision 1711 DC Power supply to add to my "collection" and its rated 60VDC output. It arrived and would not turn on. After the repair the supply was very noisy due to a loose heat sink.

 

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6Jan/120

Alinco DR-635 Pre Amp Repair

I came across a DR-635 that was dead.  After removing the panels it was clear that the pre amp IC had failed.  Note that the heatsink comes out of the board thru a slot for cleanup.  Below are pictures of the repair.  I used solder paste and a hot air station to repair the unit after initial trace and PCB repair using superglue (Don't breath fumes).  Parts were purchased from Alinco.


 

 

 

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