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TV screen dislay partial horizontal beam

Model - Bush 2137T 21"
The problem has been deteriorating gradually and now the TV screen is only displaying a horizontal 1" picture. The sound is still ok and the channels are still working. Any comments please. Thank you in advance.

Mario.

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  • 252 Answers

You had a problem on vertical section of your tv, if can fix it ,change the 100/50 volts capisitor on .vertical section or else all capasitors in vertical section

Posted on Oct 08, 2008

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Posted on Jan 02, 2017

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2 Answers

I have a bush tv its got sound but no picture


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 the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Apr 08, 2015 | Bush Televison & Video

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Why I have a thin line across the screen in my TV model Panasonic TC 21. After replacing the vertical IC the horizontal line across the screen reduced to few inches and not as it was earlier. vertica


First, You should to replace by original part, then you should check the voltages on power supply, and check the voltage for vertical IC based on datasheet, also check the voltages on vertical section including yoke and last you should check the ESR capacitors on vertical section.

Oct 13, 2014 | Panasonic TC-21PM10RQ 21" TV

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Sony tv 21 inch horizontal output transistor failing frequently


• Power Supply B+ is higher than normal


• Partially shorted Flyback Transformer


• Bad Deflection Yoke


• Too much oscillation on the Jungle IC


• Bad capacitors around the horizontal output transistor

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1 Answer

Bush 32inch tv has the power light on but has a black screen help?


Power light is there, and sound is OK, indicates the faut is with the horizontal output section. Check all the components in the horizontal output circuit. Line output transormer should be suspected.
Image of the suspected components attached.
5_9_2012_11_47_28_am.jpg

May 08, 2012 | Bush Televison & Video

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Picture compresed to horizontal line in screen center


REPLACE VERTICAL IC & ASSOC. CAPACITORS

Apr 11, 2009 | Televison & Video

1 Answer

Bush tv has a circle on screen like looking thru a telescope


HELLO

Funnily enough I have been given a 21 inch standard Bush set with the same problem!

It's a DEGAUSSING fault. This means the deguss circuit in the TV is not operating as it should - probably a faulty positor. When you switch the TV on (NOT FROM STANDBY) the circuit that removes magnetism from the screen does not work correctly.

Switch it off, unplug the set from the mains for 30 minutes or so and try it again. If there is no change, contact a TV repair centre.

Make sure there are no hifi loudspeakers next to the TV or a radiator as this can have an effect too.

ALL THE BEST! (:-)

Jan 06, 2009 | Bush 5693D 24" TV

1 Answer

My Siny Trinitron G21M1 is producing horizontal lines across the screen


Hi,
I hope your TV model is Sony KV-G21M1 and you see color bars as horizontal lines across the screen.
Let me now are you tech guy or know how to repair TV to guide you further.

Oct 26, 2008 | Sony Televison & Video

1 Answer

TV screen dislay partial horizontal beam


This is a problem with the vertical circuit. Look for a small flat IC attached to a heatsink that will be marked LA7837 or something similar. It should have about 11 pins. Try resoldering the pins on that IC first. If that does not resolve the problem, replace the IC. There may be capacitors that require replacement in that circuit as well.

Keep us posted.
Dan

Oct 07, 2008 | Bush 5693D 24" TV

1 Answer

Standby mode


hi there, try to check first the power supply section. test some parts. ty

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1 Answer

TV Screen Does not Display Entire Image


Most likely it has a horizontal width control on the inside of the set on the main module. It is usually to the right side of the set near the high voltage transformer. I advise caution unless you understand the operation of the tv and the components near the control.

Jan 29, 2007 | Zenith A32B86R 32" TV

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