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PANASONIC SX4 54CM COLOR TV LOW VOLTAGE - Televison & Video

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  • SBUSISO
    SBUSISO Oct 15, 2013

    PANASONIC SX4 VOLT IN IS 298V AND OUT IS 11.89V ON C4804 TRANSISTOR

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Panasonic sophia 21 inchez..


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. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences of the author of that site.

Sep 03, 2016 | Panasonic Televison & Video

2 Answers

Power light is blinking and the tv won't power up.


In that case the problem of your television is the power supply.The power supply have low voltage output so that the board of your TV cannot drive,so that the TV wont turn on.The power supply have leak capacitor that may cause of abnormal voltage.The output voltage of the power supply is +5V, +12V, and +24V.So the power supply is the problem its need to repair.Thanks

Aug 24, 2011 | Panasonic Viera TH-42PZ80U Plasma TV

1 Answer

I have a gateway desktop monitor with the model number FPD 1960 TFT LCD COLOR MONITOR. The power does not come on after you switch on. When I opened and checked I discovered that power does not go into...


So you can see at least two bad caps, then you need to replace them, there should be a set of caps for the 5v power supply for the logic circuits and the set of caps for the16~18 vdc power supply for the backlights inverter circuits.
http://s807.photobucket.com/albums/yy352/budm/GATEWAY/

Make sure to use low ESR type caps.
Read my guide to understand how LCD monitor works.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Jul 13, 2011 | Gateway HD2201 22" LCD Monitor

1 Answer

Fuzzy picture, color and volume comes and goes


the main chip in the TV that controls all these options (sound - sharpness etc...) you will need to bring this TV into a repair shop - the transformer that blew up caused a voltage surge that fried this chip

Dec 08, 2009 | Panasonic CT-27D32 27" TV

1 Answer

Color Adjustment Problems - Reception in Black and White


satelliteand cable TV is only comes in black and white.
this a HTML type plug or a coaxial
select menu and source
very weird... should default to colour

if no luck try plugging in a desk top digital box tune using that

TH-42PX20 TH-50PX20 Operating Instructions High Definition Plasma ...

ftp://ftp.panasonic.com/television/om/th-42px20_en_om.pdf

Apr 24, 2017 | Panasonic VIERA TH-65PV500 65 in. Plasma...

3 Answers

UNKNOWN VALUE OF VOLTAGE ZENER DIODES


I was not able to find any service or schematic for this model. The colors means that the value is 22.6 volts zener diode with the other blue band indicating where the cathode is.
Could you tell me where or what other components this zener diode is connected to?

Jul 02, 2008 | Televison & Video

2 Answers

My tv is TX-32DK20F, but this is closest i found. I don't have blue color on my tv.


HI,the usual faults & simple ones are on the CRT bd on the PIX tube neck,by your description id say the blu or red drvs need attention.or supply rail. regards CHOOK.

Apr 11, 2007 | Panasonic TX-32PK1 TV

1 Answer

Red drained out of picture


The red transister on the CRT socket could be at fault. there is 3 transisters on the socket check for the voltages on all 3. If the red is high unplug the socket and see if it normal if not the transister or circuit feeding has a short. If low the same case seneral applies and a resistor feeding the transister is defective or the transister itself is at fault

Aug 28, 2006 | Panasonic CT-32SL15 32" TV

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