Question about Sharp 20F640 20" TV

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Volume not come out but display on screen normal .this set using ic ixb226wj &m61260. then on av1 come notice component this chanel can not to be input

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Re: Volume not come out but display on screen normal...

First check speakers if ok then replace audio output chip.

Posted on Jan 18, 2008

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I have a lg crt tv set is normally start but no display no sound increase screen lot came retrace line with gray screen I change tda9381... and base no change please help me. .

The IC TDA9380 & 9381; that we get today's' are not working types. I too did felt this, and I've started rejecting sets using this IC; out my service room. I'm doing this work since 43 years. and have no intend to lose my money for buying this IC; or work with such type sets.
Wish you Good Luck; if you get a working IC any more.

Feb 02, 2015 | LG Standard (CRT) Televisions

1 Answer

How do i change the input

The 27" TV uses the same instructions as the 20", and I found the manual for you at the link below. Answering your question directly, here is the section of the instructions about changing input:
Changing the TV's Input Normally, your TV displays the signal coming through the antenna terminal. However, if you've connected another component to your TV(such as a VCR & DVD) using the Video/Audio input,you will want to be able to view the signal from the component.To do this, you will need to switch from the ' TV ' input to the 'AV1-AV3, CVI' Input, as follows. 1 With the TV on, press the MENU button twice, then " Set-Up " menu will appear. 2 Use the WCHV buttons to select " Input ". 3 Press the CVOLB buttons to change the input source from ' TV ' to 'AV1, AV2, AV3, CVI'. 4 Wait 20 seconds, or press DISPLAY button or MENU button to return to normal TV viewing. * CVI means the Component Video Input (Y/ PB/ PR) from the DVD player etc.* Users can also select these input modes with the TV/AV button or the INPUT button on theremote controller. * On the AV1 mode , if you connect the S-VHS jack to your TV, "AV1" is changed to "S-VIDEO".
The link to the manual is below.

Jun 01, 2014 | Daewoo DTQ-27U4SC 27" TV

1 Answer

Orion tv model 1933 only 34 and aux

change your memory ic ( 8 pin ic ) or" reprogram your memory store problem solve 100%.

May 29, 2012 | Orion1934 19" TV

1 Answer

Philips 30PW850H 30" TV screen is completely

normally color crt tvs have three guns such as red green and blue. when the voltage at the cathode any of these guns go to zero that color will lead in the screen.

in ur case the green cathode voltage is low. that's why the is green on all over the screen.
if it suddenly came then there is a possibility of dry soldering in the pcb behind the picture tubes neck. we called it as base board. which consist of three transistor or one ic for cotrolling cathode voltage of the guns .

if u have a soldering iron the open ur tv and try to re-solder components in the base board. mainly the component with three leg ( if transistor). if there is ic it will have more than 6 legs . if you can try to re-solder all the points. Be care-full that dot make short circuit when soldering. after care full soldering power on the tv and watch the scree. you problem Will solved.

if u need any further assistance from me, feel free to contact me through fixya.

Jan 16, 2011 | Philips 30PW850H 30" TV

1 Answer

#27PT543S37A philips tv model-the tv video channel is not working

In short your tv has a problem on the AV connection, RF using coaxial cable is working okay.
get the tv to the w/shop, let him check the AV panel and AV processing IC.

Apr 30, 2009 | Philips Standard (CRT) Televisions

1 Answer

Sanyo 68cm. AV1 is Black and White. AV2 and normal Tv is OK

the two AV1 and AV2 have different inputs on the IC,
the first port has a disconnection,
take your tv for a check up

Mar 20, 2009 | Sanyo DS13204 TV

1 Answer

BEKO TRW325 TV. Frozen on chanel 1.

I turned the TV off. I held in all of the (4) buttons on the front of the TV and turned the TV back on again....this seemed to free up the remote control access and I was able to work the TV normally. The four buttons were the channel and the volume controls.

Dec 25, 2008 | Beko 324250WN 28" TV

1 Answer

2-inch picture stripe in middle of screen.

deight, your set is going into total vertical collapse, either the vertical IC is failing or some support component to the vertical circuit is failing, should not be an expensive repair, hope this helps, BMW Rider

Dec 12, 2007 | Sylvania 6419TA 19" TV

1 Answer

Volume wont turn down or mute

This can happen if you hook an external amp to the audio output jacks on the TV and those jacks are set to fixed output, but I will assume that you are talking about the sound through the TV's internal speakers. If the picture is normal and the On Screen Display (OSD) shows that volume is being turned down then the microprocessor is putting out the correct clock and data commands. You need to find the audio processor IC which controls the volume, tone, balance, etc. and see if the clock and data information is actually reaching that IC. If it is then I will bet that the IC is defective and needs to be replaced. If you do not have an oscilloscope or experience in repairing PC boards then have a qualified tech handle it for you.

Jul 11, 2007 | Quasar SP-2723 27" TV

1 Answer

Got picture but no display...

Yes it could be the microprocessor IC or the display IC. Im not sure how the display system works as I do not have a schematic for the set. now what I have seen in the past, is that when the flyback blew out it sent a spike pulse way bigger then it should have been and blew out the display sync circuit, and that is built into the microprocessor. Also I have seen in the past, when a main componet such as a flyback transformer is replaced, there are small surface mounted componets near and around the flyback that gets unsoldered. These are ussually small surface mounted type resistors or capacitors that send a pulse to sync up the display output with the horizontal and vertical sweep, or the display would not know where to be and would run so fast along the screen that you would not see it. Check out the horizontal pulses to the micro, or like I said the micro is bad. Good Luck

Oct 09, 2006 | LG 30FZ1DC 30" TV

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