Question about Toshiba 19A25 19" TV

Broplem there is no picture on tv but the sound is ok and whene i hit the line transformer the picture comes on for a while then its gone againe aii other fanction work allright

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168 Answers

I beleive the problem of your TV is the horizontal circuit probably cold solder. if you have soldering equipment, try to resolder the circuit. but if you don't know anything about this, i suggest you bring it to a qualified person.

Posted on Jan 14, 2007

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How to fix problem of jvc crt tv model av-21l31 power ok no video/audio no display with lines coming from flayback

Look at the horizontal output transistor then the fly back transformer.Check ALL the voltages coming from the power supply. One or more of them have to be missing for the audio and video to be gone at the same time.

Sep 24, 2014 | Televison & Video

2 Answers

No picture displaying but sound coming through ok

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Apr 21, 2014 | Bush 5693D 24" TV

1 Answer

Westinghouse LTV-37w2 HD have no picture, no sound, no blue power light on - only some buzzing. What it can be ?

if it is just buzzing then the transformer has gone, may have over heated.it transforms the line in volts down to the volts needed to run the tv. so say 240v ac in and tv needs 110v ac. now the volts in will be making the buzzing sound but the coil on the 110vac side has gone. if you change the transformer. has to be the same colour and number. tv should be fine. as the coil in the transformer brakes its just like removing the plug from the wall and not do any more damage. so just the transformer will need changing.

Oct 01, 2013 | Westinghouse LTV-37w2 HDTV

1 Answer

Picture on screen has gone to only 1/4 of screen with strong line through picture.

This sounds like the OPT or LOPT has blown or weak ( OPT = Line output transistor. LOPT = Line output transformer.)
This job should only be carried out by a professional engineer. I would take it to your local TV repair person. Hope this helps.

Apr 13, 2011 | Sansui Televison & Video

1 Answer

I have a Phillips FLATTV model ... Problem with the Philips Flat Panel Televisions I have a Phillips FLATTV model 42PFL7662D/ 05 I have no picture, the audio is OK, I have had a hissing noise for about 2...

Try with that...
http://www.filestube.com/3c4e959f7e53ba6703e9,g/PHILIPS-42PFL7932-LC420WU5-V2-CIRC.html

Symptom:
Sound but no picture.

Cure:
Master or Slave inverter is defective.
It can be that the driver IC is defective or MOSF
inverter transformers, or 470uF 35V C
Replace driver IC BD9897FS or MOSFET's.
996500046243 IC BD9897FS
996500046242 Mosfet FDD8447L
996500046241 Zener KDZ100V

Oct 18, 2010 | Philips Televison & Video

1 Answer

Good sound, picture is flat lined. suspect flyback transformer.

Check for 28volts coming out of the flyback through resistor and rectifier , if it is there then you may want to look at the vertical output i.c , it may be gone or cold soldered which is common in those sets.

Nov 01, 2009 | Sanyo DS27930 27" TV

2 Answers

Power light flashes 3 times and makes and alarm or chirping sound then nothing. its a 52 inch RCA hd52w59 itc222 chassis. I replaced cp150 and cp120/114 and also flyback transformer and still same thing? I...

Chirping sound is coming from coil on right side behind FBT, resolder then use Glue gun to glue on top of coil LL037,Make sure high voltage wire from FBT to Trippler is in Good this is what maybe causeing lines and fuzzy picture.Also make sure solder on all pinns of FBT are good.

Sep 22, 2009 | RCA HD52W59 HDTV Projection Television

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How to fix Telefunken tv mp162m'

i found out in my in dept probing around the line output transformer has gone so no tv it is to get recycled

Feb 14, 2009 | Apex Digital PF2020 20" TV

1 Answer

H.V shuts down/

try to check a bad conections in hv transformer and capacitor around them

Feb 01, 2008 | Zenith B27A11Z 27" TV

1 Answer

TV working, then suddenly no picture, no sound

could be flyback transformer cracked need replaced 48.00 for part or board replacement usually done at about $200.00 , part number is 9-2022

Nov 24, 2007 | Zenith A25B33W 25" TV

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How to fix problem of jvc crt tv model av-21l31 power ok no video/audio no display with lines coming from flayback

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My 50 inch Emerson flat screen tv volume keeps going down by itself&it wont let me turn off tv by touching tv power button&it does not let me turn it off by the remote either. The remote is working for the cable box though. Can you help me?

Mar 06, 2021 | Emerson Televison & Video

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Broplem there is no picture on tv but the sound is ok and whene i hit the line transformer the picture comes on for a while then its gone againe aii other fanction work allright

1 Answer

Anonymous

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Related Questions:

How to fix problem of jvc crt tv model av-21l31 power ok no video/audio no display with lines coming from flayback

No picture displaying but sound coming through ok

Westinghouse LTV-37w2 HD have no picture, no sound, no blue power light on - only some buzzing. What it can be ?

Picture on screen has gone to only 1/4 of screen with strong line through picture.

I have a Phillips FLATTV model ... Problem with the Philips Flat Panel Televisions I have a Phillips FLATTV model 42PFL7662D/ 05 I have no picture, the audio is OK, I have had a hissing noise for about 2...

Good sound, picture is flat lined. suspect flyback transformer.

Power light flashes 3 times and makes and alarm or chirping sound then nothing. its a 52 inch RCA hd52w59 itc222 chassis. I replaced cp150 and cp120/114 and also flyback transformer and still same thing? I...

How to fix Telefunken tv mp162m'

H.V shuts down/

TV working, then suddenly no picture, no sound

Not finding what you are looking for?

19A25 19" TV

How to fix problem of jvc crt tv model av-21l31 power ok no video/audio no display with lines coming from flayback

Open Questions:

I have a magnavox 40MF401B/F7 and it turns on but then it has green,red,yellow lines going up and down all across hole screen then they start to turn black all except the last 4/5 from the edge on the right and have sound ?????? Please help

My lc 40g81 Seiki TV will power on fine and then the screen will go solid green or blue and then go out. Aldeary tried a t-con board swap, didn't help. Stripped the TV down to the panel and cleaned/ reseated all connections as I went. No obvious damage.

I have a 60 inch Samsung 7500 series Smart TV and the On/Off button, on the remote and the TV will not work.

My 50 inch Emerson flat screen tv volume keeps going down by itself&it wont let me turn off tv by touching tv power button&it does not let me turn it off by the remote either. The remote is working for the cable box though. Can you help me?

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Broplem there is no picture on tv but the sound is ok and whene i hit the line transformer the picture comes on for a while then its gone againe aii other fanction work allright

1 Answer

Anonymous

Add Your Answer

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Related Questions:

How to fix problem of jvc crt tv model av-21l31 power ok no video/audio no display with lines coming from flayback

No picture displaying but sound coming through ok

Westinghouse LTV-37w2 HD have no picture, no sound, no blue power light on - only some buzzing. What it can be ?

Picture on screen has gone to only 1/4 of screen with strong line through picture.

I have a Phillips FLATTV model ... Problem with the Philips Flat Panel Televisions I have a Phillips FLATTV model 42PFL7662D/ 05 I have no picture, the audio is OK, I have had a hissing noise for about 2...

Good sound, picture is flat lined. suspect flyback transformer.

Power light flashes 3 times and makes and alarm or chirping sound then nothing. its a 52 inch RCA hd52w59 itc222 chassis. I replaced cp150 and cp120/114 and also flyback transformer and still same thing? I...

How to fix Telefunken tv mp162m'

H.V shuts down/

TV working, then suddenly no picture, no sound

Not finding what you are looking for?

19A25 19" TV

How to fix problem of jvc crt tv model av-21l31 power ok no video/audio no display with lines coming from flayback

Open Questions:

I have a magnavox 40MF401B/F7 and it turns on but then it has green,red,yellow lines going up and down all across hole screen then they start to turn black all except the last 4/5 from the edge on the right and have sound ?????? Please help

My lc 40g81 Seiki TV will power on fine and then the screen will go solid green or blue and then go out. Aldeary tried a t-con board swap, didn't help. Stripped the TV down to the panel and cleaned/ reseated all connections as I went. No obvious damage.

I have a 60 inch Samsung 7500 series Smart TV and the On/Off button, on the remote and the TV will not work.

My 50 inch Emerson flat screen tv volume keeps going down by itself&it wont let me turn off tv by touching tv power button&it does not let me turn it off by the remote either. The remote is working for the cable box though. Can you help me?

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