Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Television broken
Television broken
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 18th January 2003, 07:27 PM   #1
Bull is offline Bull  United Kingdom
diyAudio Member
 
Join Date: Oct 2002
Location: ...........
Default Television broken

The other day i was watching tv,and i heard a pop,but nothing loud,and the screen went black.
Phillips 14 inch tv,7 years old, cost me 170 new.

I've checked the plug fuse and cable with a multimeter,they are fine.When i looked inside the internal fuse was cracked and black,and 1 transistor,1 resistor,4 diodes,and 4 capacitors are burnt.And the board is a bit burnt also.
But the damaged componets,aren't too burnt,because i can still read what value they are.
So i replaced the broken parts,with brand new ones,and i used a heat shunt,to stop the solding iron burning out the new transistor.But still nothing after fixing the damaged parts.
I don't think it's the cathode ray tube,because it does look okay,but it could be an IC or something worse like the transformer,or high voltage generator and high voltage connector damaged.How do you test a component with more than three legs,such as an IC or transformer.I have A Fluke Digital Multimeter,but i haven't got an osscilliscope.
I'd rather fix it myself,than fork out 50 quid for just the labour,30 quid for the shop to just look at it,and then for addiational parts.
So Either is it a simple matter,like the copper tracks on the printed circuit board broken,or other cheap componets such as resistors broken.Or Throw it away and buy a new one.
P.s. it's also a shame manufactors guarntees are only 1 year,plus the addiational 3 year guarntee i took out.But i'd be willing to pay more for an addiational guarntee of at least 7 years,if one excisted.But anyway 7 years constant use out of a 14 inch Phillips tv is good for 170.Although i'm quite poor,thats why i'd rather repair it for less than 170,then buy a new one.
  Reply With Quote
Old 18th January 2003, 08:12 PM   #2
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Default Tv

Bull

Can you provide the type (on the backside of the set) and the position numbers of the burnd parts?

Hugo
  Reply With Quote
Old 18th January 2003, 08:23 PM   #3
dhaen is offline dhaen  Europe
diyAudio Moderator Emeritus
 
dhaen's Avatar
 
Join Date: Jun 2002
Location: U.K.
Default Danger!

This is a job that should really only be tackled with an isolation transformer, and knowledge of high voltage working.
The fault sounds like it's in the switching power supply. Most of that is LIVE.

Take care,
  Reply With Quote
Old 21st January 2003, 01:08 AM   #4
Mark A. Gulbrandsen is offline Mark A. Gulbrandsen
diyAudio Member
 
Join Date: Sep 2001
Location: Salt Lake City
Mine was broken too but I repaired it last night!! Works like new now considering it was built in 1946! (RCA 721TS)...........Bad filter cap in the main B+ supply..........dang thingys.
Mark
  Reply With Quote

Reply


Television brokenHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Surround sound amp, Sub woofer and television warrennyc Subwoofers 4 3rd January 2005 11:33 AM
distance from television ALFIrE Multi-Way 2 30th March 2004 07:46 AM


New To Site? Need Help?

All times are GMT. The time now is 04:18 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki