How to repair a touch lamp etc. - Router Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 21 (permalink) Old 03-04-2009, 02:55 AM Thread Starter
RouterForums.com User
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,812
     
Send a message via Skype™ to harrysin
Default How to repair a touch lamp etc.

Most electronic devices that are designed to control voltage levels as in touch lamps which have four levels of control,low, medium, high and off, also light dimmers, speed controllers, temperature controllers etc, use a device called a Triac and when such controllers fail, it is almost certain that it this high current device that has failed, the rest of the circuitry only handle low currents and therefore seldom fail.
I would also mention that equipment that simply needs turning on and off generally use a common or garden power transistor. Such a piece of equipment can even be a computer board controlling a car engine. When these very expensive units fail, it's often because one of the power transistors (which generally look the same as the Triac shown in this thread) and controls one of the many sensors, has failed. What I'm trying to illustrate is that to repair the type of equipment described, little technical knowledge is required other than the ability to use a multi-meter together with the information given here.

Shots 4, 6 and 8 have been redone and are out of order, perhaps a moderator knows how to re-arrange them.........thank you, but in case not, this is how they are: 1.2.3.5.7
9.6.8.4
Attached Thumbnails
Click image for larger version

Name:	Touch-lamps1.jpg
Views:	104
Size:	29.5 KB
ID:	20820  

Click image for larger version

Name:	Touch-lamps2.jpg
Views:	93
Size:	31.1 KB
ID:	20821  

Click image for larger version

Name:	Touch-lamps3.jpg
Views:	99
Size:	34.0 KB
ID:	20822  

Click image for larger version

Name:	Touch-lamps5.jpg
Views:	109
Size:	19.1 KB
ID:	20824  

Click image for larger version

Name:	Touch-lamps7.jpg
Views:	113
Size:	42.7 KB
ID:	20826  

Click image for larger version

Name:	Touch-lamps9.jpg
Views:	82
Size:	26.2 KB
ID:	20828  

Click image for larger version

Name:	Touch-lamp6a.jpg
Views:	85
Size:	37.6 KB
ID:	20893  

Click image for larger version

Name:	Touch-lamp8a.jpg
Views:	76
Size:	29.1 KB
ID:	20894  

Click image for larger version

Name:	Touch-lamp4a.jpg
Views:	88
Size:	33.6 KB
ID:	20895  


Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus







Last edited by harrysin; 03-05-2009 at 12:05 AM.
harrysin is offline  
Sponsored Links
Advertisement
 
post #2 of 21 (permalink) Old 03-04-2009, 06:47 AM
Registered User
 
Gerard_sr's Avatar
 
Join Date: Dec 2008
Country: United States
First Name: Gerard (AKA: Gerry )
Posts: 246
 
Default

Good one Harry!
These darn lamps always seem to go bad when the lamp fails.

Cordially,
Gerry

This community is the sum of of the knowledge of all.
Only we must communicate that knowledge to each other via this forum.
Participate, Teach and Learn.
Gerard_sr is offline  
post #3 of 21 (permalink) Old 03-04-2009, 06:53 AM Thread Starter
RouterForums.com User
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,812
     
Send a message via Skype™ to harrysin
Default

I think the secret to prevent that happening Gerry is to only purchase well known branded globes, it appears to be the cheap Chinese ones that cause this problem. As from today I'm going to practice what I preach!

I've just had a thought, I wonder what will happen when we can only purchase the low energy fluorescent lamps, I doubt that they'll work, who's game to try one?

Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus







Last edited by harrysin; 03-04-2009 at 06:57 AM. Reason: To add last paragraph
harrysin is offline  
Sponsored Links
Advertisement
 
post #4 of 21 (permalink) Old 03-04-2009, 07:54 AM
Registered User
 
Join Date: Dec 2008
First Name: Michael
Posts: 84
 
Default

Harry: Thank you for the heads up on the touch lamps, I have one I almost threw away but now I am going to fix it
GateKeeper is offline  
post #5 of 21 (permalink) Old 03-04-2009, 08:00 AM Thread Starter
RouterForums.com User
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,812
     
Send a message via Skype™ to harrysin
Default

Let us know the result Michael.

Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus






harrysin is offline  
post #6 of 21 (permalink) Old 03-04-2009, 11:30 AM
Registered User
 
Ralph Barker's Avatar
 
Join Date: Dec 2008
Country: United States
First Name: Ralph
Posts: 2,001
 
Default

Perhaps the problem was an overly-macho Triac being used in a frilly, pink lamp?

- Ralph
Ralph Barker is offline  
post #7 of 21 (permalink) Old 03-04-2009, 08:08 PM
Registered User
 
Gerard_sr's Avatar
 
Join Date: Dec 2008
Country: United States
First Name: Gerard (AKA: Gerry )
Posts: 246
 
Default

Harry, the CFLs will not work. If at all only on the highest intensity as they need full foltage to "kick".
By the way, if you have the images w/o text, email them to me and I'll change the color of the text for you and send them back. They are a bit hard to read.

Cordially,
Gerry

This community is the sum of of the knowledge of all.
Only we must communicate that knowledge to each other via this forum.
Participate, Teach and Learn.
Gerard_sr is offline  
post #8 of 21 (permalink) Old 03-04-2009, 11:35 PM
Registered User
 
Join Date: Jan 2006
Country: United States
First Name: Doug
Posts: 207
 
Default

Thanks for the post Harry. Could be very helpful.

Could you upload another picture of you using the multimeter? Can't see where you are testing. thanks

Doug
DougO is offline  
post #9 of 21 (permalink) Old 03-05-2009, 12:08 AM Thread Starter
RouterForums.com User
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,812
     
Send a message via Skype™ to harrysin
Default

Quote:
Originally Posted by Ralph Barker View Post
Perhaps the problem was an overly-macho Triac being used in a frilly, pink lamp?
I did have the shades out of sight when I fitted the new triacs, so hopefully they're non the wiser!

Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus






harrysin is offline  
post #10 of 21 (permalink) Old 03-05-2009, 01:22 AM Thread Starter
RouterForums.com User
 
harrysin's Avatar
 
Join Date: Jan 2007
Country: Australia
First Name: Harry
Posts: 14,812
     
Send a message via Skype™ to harrysin
Default

Quote:
Originally Posted by DougO View Post
Thanks for the post Harry. Could be very helpful.

Could you upload another picture of you using the multimeter? Can't see where you are testing. thanks
Doug. the first shot is the same way round as in the thread, the second one with the triac facing the camera in which case the pins from left to right are main1..main 2..gate, the ohms reading between 1 & 2 should be very high with a good device, when they blow, the reading between 1 & 2 becomes very low, anywhere from zero to just a few ohms. The BT139-600 triac shown is rated at 600volts @ 16amps.
Attached Thumbnails
Click image for larger version

Name:	testing1.jpg
Views:	57
Size:	18.3 KB
ID:	20896  

Click image for larger version

Name:	testing2.jpg
Views:	67
Size:	15.2 KB
ID:	20897  


Harry



Nothing but heaven itself is better than a friend who is really a friend. - Plautus






harrysin is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











  LinkBacks (?)
LinkBack to this Thread: https://www.routerforums.com/lobby/12826-how-repair-touch-lamp-etc.html
Posted By For Type Date
Untitled document This thread Refback 04-12-2009 08:00 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rail/Stile Red Oak and Stained Glass Lamp (Lots of Pics)… Nickbee Show N' Tell 8 01-08-2009 09:50 AM
Stained Glass Accent Lamp Build Along… Nickbee Show N' Tell 29 11-07-2008 05:46 PM
Rikon lathe repair shelhays New Member Introductions 2 07-26-2008 10:05 PM
Hatch door repair jbishop Tools and Woodworking 1 03-31-2008 07:09 PM
Lamp ? for you pros Glenmore Woodturning and Lathes 11 06-03-2007 07:48 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome