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Television broken
Television broken
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Old 18th January 2003, 07:27 PM   #1
Bull is offline Bull  United Kingdom
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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.
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Old 18th January 2003, 08:12 PM   #2
Netlist is offline Netlist  Belgium
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Default Tv


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

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Old 18th January 2003, 08:23 PM   #3
dhaen is offline dhaen  Europe
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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,
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Old 21st January 2003, 01:08 AM   #4
Mark A. Gulbrandsen is offline Mark A. Gulbrandsen
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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.
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