20 Most Recent Panasonic CT-27HL14 27" TV Questions & Answers

Hi. The Heater voltage primarily comes from the LOPT, (Line Output Transformer). The pin on the transformer should be marked with a H. If there is voltage from that pin, follow the track from there checking for open circuit or out of value resistor(s). My personal view is that the LOPT is the cause of your trouble and should be replaced. It has developed an internal failure which has had the result of not supplying the heater voltage, even though it is generating HV. Hope this info is of some use to you and good luck.

Panasonic... • Answered on Jan 28, 2011

I think you have safely eliminate the remote as the problem but just incase put the remote in a drawer or someplace where it can't possibly operate your TV. If it still happens then it's the beginning of a problem. Most often Televisions (and other equipment) can develop bad soldered connections on the board. They can be microscopic cracks in the connections. Often they will function fine for years and then start to give you trouble like you are describing. The fact that the button flashes four times means that the set is going into a shutdown mode to protect itself from further damage. This could also be a bad soldered connections inside your set. As always it tend to get worse and worse until the set becomes non-functional. The set is new enough and a good brand that I would recommend a visit to a qualified repair shop. Get an estimate and if it's less than half the cost of replacement the fix it. Otherwise you will need to start looking for a replacement. Try the shop first though.


Panasonic... • Answered on Jun 23, 2010

try hard reset or manufacture reset, on the tv (unplug for two minutes, and see if the settings have changed back to default

Panasonic... • Answered on Jul 06, 2009


Panasonic probably uses the same code on your model.

Panasonic... • Answered on Dec 28, 2008

This particular unit has a built-in diagnostic. The LED in front will blink for a set number of times following the failure. The blink code is:

1 Flash Power+140
2 Flashes Low B+ D.C
4 Flashes Hi Voltage Hhs
5 Flashes Ic4511
6 Flashes Ic4518
8 Flashes Audio Amp

Can you possible tell how many flashes there are following the instant shutdown?


Panasonic... • Answered on Jul 19, 2008

Call panasonic, they are great at at solving this type of problem, if you get a good tech rep they will quickly find it for you.

good luck-----------------------tomtaso

Panasonic... • Answered on Nov 27, 2007

check the degassing circuit and replace the degassing relay, then use a degausing ring to bring the colors back to normal you should be ok. good possiblity a bad solder connection at the degausing circuit themister.

Panasonic... • Answered on Jun 11, 2007

Usually there is a capacitor in the pump up circuit and/or an IC in the vertical circuit that causes this problem. Contact Panasonic at: http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001 To find a servicer in your area. This will give you an idea of the cost of repair. Hope this helps.

Panasonic... • Answered on Jun 03, 2007

Do you know how to work on solid state electronics? if not then Im sorry to say you will need to get the assistance of a local tech who is experienced. As these sets are solid state and there are no user servicable parts inside. Good Luck

Panasonic... • Answered on Mar 08, 2007

the symptom is usually caused by a breakdown in the power supply circuit. in most modern receivers (transistorized and/or ic), it may also be caused by a breakdown in the horizontal deflection circuits (hor. oscillator, pre-drive, or drive circuits). supply voltages for the tuner, vif,sif, and vertical output are usually supplied by the horizontal output circuit. but if you doesnt know anything about these stuffs, better bring it to a qualified service tecnhician.

Panasonic... • Answered on Jan 16, 2007

You could have a very small crack in the main circuit board. To find this you'd have to pull the board and flex it slightly and/or use an insulated and non conducting object such as a plastic rod and tap the board all over until you find a sensitive place. You have to do this with the set turned on. If you're not experienced at this type of trouble shooting, you need to get a qualified tech to do it for you. These sets usually require the use of an isolation transformer to protect you for being shocked. Also you need to know how to work around high voltage circuits. There's several thousand volts on your picture tube. Also you need to make sure you don't cause a short when the board is out of it's holder and in operation. Be careful ! Stargazer

Panasonic... • Answered on Jan 13, 2007

this product has a pincushion problem and requires servicing but unfortunatley it is what we call in the business NECO

Panasonic... • Answered on Dec 09, 2006

If there is a warranty, even if only for 4 days, use it. Do not delay

Panasonic... • Answered on Jul 31, 2006

You have a short in your unit somewhere or a high voltage problem. The most common problem would be a high voltage failure. If you are not familiar with televisions and their safety this is best left to a repair shop. There is not much in a TV that consumers, unfamiliar with the system, can check. The problem should not cost too much to fix. Check for a shop which has a free estimate or low estimate which will be subtracted from the cost of the repair if you choose to have the unit repaired there. Good luck.

Panasonic... • Answered on Jul 12, 2006

I have an identical national tc 300 sp 3-in-1 unit. The power input for this set will automatically accept 120-220-240 VOLTS AC. The ac power pins in the 6-pin socket are the two horizontal pins immediately underneath the locating spiggot in the socket.

Panasonic... • Answered Yesterday

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