Welcome, Guest. Please login or register.
November 07, 2024, 12:26:12 AM

Login with username, password and session length
* Home Help Arcade Login Register
.
+  Forum
|-+  NLG Members who host their own Repair Logs of Various Games.
| |-+  Channelmaniac's Arcadecomponents' Old School Repair Logs (Moderator: channelmaniac)
| | |-+  Hobby Repairs
0 Members and 1 Guest are viewing this topic. « previous next »
Pages: [1] Go Down Print
Author Topic: Hobby Repairs  (Read 12926 times)
channelmaniac
Surface mount soldering geek
Global NLG Site Moderator
Sr.Tech NLG Member 1000+ Post
*

Total Karma Storms: 568
Offline Offline

Gender: Male
Posts: 2126


Few things are better than fixing an old game...


WWW
« on: July 14, 2010, 10:46:54 PM »

Model: Amtrak N-Scale Locomotive
Symptom: Won't move. Buzzes then trips power pack breaker

This is a first for me as I've never worked on a train before.

Background: 11yr old son bought a used locomotive off of eBay. It didn't work upon arrival.

Removed shell from the engine. Removed 2 screws to take assembly apart. The assembly was 2 die cast metal halves with rubber washers between and plastic sleeves for the screws to insulate the halves. The metal wheels conducted electricity into each half of the assembly. The motor was wedged in the middle and had 2 metal tabs to make contact with each half of the assembly.

Motor tested good with a 9v battery. The gears transferring the energy from the screw gears on the motor to the drive wheels under the car were frozen in place. Removed the gears, cleaned the area with Q-Tips and alcohol. The plastic dust from the gears seized on the metal shaft. Carefully scraped the plastic from the shafts, cleaned the inside hole of the gears and reassembled. Tested the train with the 9v battery and it worked.

Train would not move smoothly on the tracks. Cleaned the metal drive wheels and re-tested successfully.
Logged

I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com
channelmaniac
Surface mount soldering geek
Global NLG Site Moderator
Sr.Tech NLG Member 1000+ Post
*

Total Karma Storms: 568
Offline Offline

Gender: Male
Posts: 2126


Few things are better than fixing an old game...


WWW
« Reply #1 on: May 31, 2012, 02:25:47 AM »

Model: Kenwood TS-820 Amateur Radio
Symptom: Will not receive

Radio was as deaf as a post and wouldn't even receive the built-in 25KHz marker signals.

Checked the basics and found that the 9v power source on the AF-AVR board was dead and the 3.3v source was sitting at 2.5v. Replaced a bad 500 ohm pot and an open transistor in the 9v section. Adjusted the 9v and 3.3v sources to spec and the radio would receive on the 10M bands only.

Found the output of the VFO to be low. Adjusted the output to be .6v RMS as specified in the service manual. The radio would then barely receive the marker signal on most bands. Checked the PLL and the mixers. Checked the various signals in the VCO circuit and everything was good.

Tried to turn the band switch into Aux mode and it would not go. Checked the band switch on the COIL PACK board and found it was misaligned with the front panel. This caused the 1.8MHz band to use the 3.5MHz coils, the 3.5MHz band to use the 7MHz coils, etc. The 10M bands worked because they all shared a common coil. Realigned the band switch and the radio will now receive on all bands.
Logged

I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com
channelmaniac
Surface mount soldering geek
Global NLG Site Moderator
Sr.Tech NLG Member 1000+ Post
*

Total Karma Storms: 568
Offline Offline

Gender: Male
Posts: 2126


Few things are better than fixing an old game...


WWW
« Reply #2 on: January 31, 2013, 01:59:02 PM »

Model: Klipsch RW12 Subwoofer
Symptom: Very low audio output

System is odd in that the power supply voltage outputs are variable and track the audio inputs. Without proper feedback, the power supply only outputs +/-4.2v to run the output circuitry.

Replaced 1 LM324 IC and 2 22uf non-polarized electrolytic capacitors on the Feature Board and tested.
Logged

I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com
channelmaniac
Surface mount soldering geek
Global NLG Site Moderator
Sr.Tech NLG Member 1000+ Post
*

Total Karma Storms: 568
Offline Offline

Gender: Male
Posts: 2126


Few things are better than fixing an old game...


WWW
« Reply #3 on: March 01, 2014, 07:20:55 PM »

Model: Kalimar 2x Tele Converter for Olympus-OM
Symptom: Loose fit and rattles

Removed bent flange ring from back of converter, flattened it out, and remounted it to fix the loose fit. Removed the front ring and the inner lens assembly fell out. It was glued in place and the glue failed. Reglued the assembly into place, reattached the front ring, and tested.
Logged

I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com
Pages: [1] Go Up Print 
« previous next »
Jump to:  


If you find this site helpful, Please Consider Making a small donation to help defray the cost of hosting and bandwidth.



Newlifegames.com    Newlifegames.net    Newlifegames.org
   New Life Games    NewLifeGames  NLG  We Bring new Life to old Games    1-888-NLG-SLOTS
Are all Copyright and Trademarks of New Life Games LLC 1992 - 2021


FAIR USE NOTICE:

This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner.
We make such material available in an effort to advance awareness and understanding of the issues involved.
We believe this constitutes a fair use of any such copyrighted material as provided for in section 107 of the US Copyright Law.
In accordance with Title 17 U.S.C. Section 107, the material on this site is distributed without profit to those
who have expressed a prior interest in receiving the included information for research and educational purposes.

For more information please visit: http://www.law.cornell.edu/uscode/17/107.shtml.

If you wish to use copyrighted material from this site for purposes of your own that go beyond fair use,
you must obtain permission directly from the copyright owner.

NewLifeGames.net Web-Site is optimized for use with Fire-Fox and a minimum screen resolution of 1280x768 pixels.


Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
Loon Designed by Mystica
Updated by Runic Warrior
Page created in 0.091 seconds with 20 queries.