Top 20 Thomson 20LCDB03B 20 in. Television - Page 8 Questions & Answers

is this tv got i lamp or 3 crts if it has 1 lamp search ebay, these items are easy to change but do get very hot

there is a common fault with the feb box a good engineer shoul check the capacitors on the small sub board

Probably bad capacitors that are leaky

You have a power supply fault have it repaired.
I hope I have been of help but please do not hesitate to ask if you have any further questions.
I appreciate your vote if you appreciate my reply.

This sounds like the protection circuit operating. With projection TV's, the cooling fan is essential to prevent damage from overheating. The fan contains a pulse generator to indicate rotation. If the pulse stops, the protection circuit will turn off the set. 5 minutes may be how long the fan takes to seize when it warms up. Also possibly heat sensitve parts along the cooling path covered with dust causing heat sensors to operate.

A downconverter does just that - converts all the channels to standard definition analog ; so no, there isn't one that can do what you want.
What you want is called a cable receiver: it converts all channels to digital and should be connected thru a digital connection (HDMI) to the tv. But if your new tv is capable of receiving digital channels why aren't you plugging the cable directly in it? No box will be needed in that case.

Sounds like your drive has failed. Fit a new drive of the same size and format it with the utility in your digi box.

you need a digital tuner box with scart or hdmi outputs

Is there no sound coming from the television? The first assumption will be that the speakers are spoilt. If that is the case, you should hire a television technician to have a look. But with the prices of television going down these days, it is usually more cost worthy to get a new set instead.

this fault is probably the sub power board and should be repaired by a service engineer due to SHOCK HAZARD

the p means it is in the service mode for engineers diferent models need different ways of getting out of this mode

Contact the manufacturer for instruction manual to down load.
Their web site will give you all the information you need.
I hope that helps.

sounds like a faulty power supply . needs a service engineer

check the color setting of tv or the signal it usually affect color when signal is bad

well that's good you have courage to do that, maybe a components problem that cause the defect, mere visual inspection is not enough you have to check the fuse, power supply circuits if you know and you must use a multi-tester to do that, if you can do it, if can't bring or call tech in your area.

it sounds like a power fault . try a service engineer to check

you have a faulty power board. maybe a complete replacement required or a good service engineer may find faulty capacitors

Hi, a common problem with the thomson freeview boxes is capacitors leaking in the power supply, The ones that go usually are the two 1000uf capacitors. If any of the capacitors look deformed, ie the tops look domed in any way. I would change them , Handy if you know how to use a soldering iron. If you can use a soldering iron remember to put the new capacitor in the same way ( the wires are marked so you must put them in the same way round).
pete

any one can give me the smps circuit diagram using P5NA80FI mosfet in thomson ctv ?

try on a different aerial at a differnt location . sounds like weak signal