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Professional Solder Gun From Japan
By Jestine Yong on August 10, 2009
Here’s the website of Nakajima Doko Corporation that sells mainly on solder gun. Click on the photo to check out the Kotelyzer 85SMD solder gun. This is a cordless heat tool for soldering/desoldering of SMD component and it has extra nozzle for each IC.
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Altaf
August 22, 2009 at 1:09 pm
dear jestine
i hve 17" lg montor (studio works) it turns on normally but shows black screen after 10 minutes i have cheak and found that main chopper of power supply is not giving out put voltaes from two pins one is 80volt pin and second is 50volt pin. and B+ voltages reading is 74volts but HOT is not showing voltages from base and emiter. please tell me what is the problem with this monitor and also tell me its solution
your student
Altaf
Altaf
August 22, 2009 at 1:14 pm
respected jestine
i m confused to cheak resistor only corbon composition is easy to cheak but i m confused to cheak metal filim resistor, metal oxide resistor and wirewound resistor specially with digital mullti metere pease giude me
NOTE ( some or resistors background colour is pink and some of resistor background colour is gray and some of resistors background colour is brown what is testing proses of those ) please guide me
your student
Altaf
Altaf
August 22, 2009 at 1:17 pm
respected jestine
please tell me testing process of electrolight capcitors,ceremic capcitors and chopper testing through digital multimeter
your student
Altaf
admin
August 23, 2009 at 11:13 pm
HI Altaf,
You can get this information from my ebook http://www.TestingElectronicComponents.com
Jestine
admin
August 24, 2009 at 9:00 pm
Hi Altaf,
The SMPS seems to be good. Check the gate signal to the B+ FET because if no gate signal the B+ voltage won't be reaching to the flyback pin thus no high voltage generated.
Jestine
admin
August 24, 2009 at 9:01 pm
Hi Altaf,
Checking the value of resistor is the same regardless of types of resistor. Just follow the resistor code and you are on the right track.
Jestine
Altaf
August 26, 2009 at 12:27 pm
Respected Jestine
in 17" LG studio works 710E its display gose off after 10 minutes. i cheak it by digital multimeter. i observed that when it shows display B+ shows 56volts and vcp pin (which connected with HOT collecter) shows nothing. but when monitor's display goes off it shows same voltage range on B+ and vcp pin why. please guide me and tell me its solution
thank your sir
your student
Altaf
admin
August 31, 2009 at 9:42 pm
Hi Altaf,
Try remove the B+ fet and power on the monitor and see if it still shutdown?
Jestine
Jacob Bondzie
January 24, 2010 at 5:20 pm
Hello sir,
I live Ghana, Africa.
I want to buy one of your professional soldering gun.
How do I buy ?
Thank You,
Jacob Bondzie
Ghana
admin
January 25, 2010 at 4:31 am
Hi Jacob,
Sorry i do not sell those professional soldering gun. Guess you need to visit the website and email them.
Jestine