Changhong LCD TV 39580 What is the standard interval between changing channels?

Hello,This time has something to do with the main chip scheme used by the TV,If the scheme itself is better,Turning on and off and changing the channel will be fast:

1.The actions that the program needs to do in the process of changing the channel are: cover the screen first - set the frequency of the high-frequency head > -> wait for the high-frequency head PLL to lock - > the main chip decoder to judge whether there is a signal -> wait for the signal to be stable -> judge the signal image and sound standard -> set the tone ** buffer and save the signal data from the front-end -> set some parameters of the output (including zoom, etc.) - > turn on the black screen;

2.In addition, the practice of the solution is also related to this experience, and the practice of some solutions is not to black the screen in the process of switching channels, but to do still image (image still), so that the feeling to the user will not be the same, and it will not feel that the black screen is turned off;

3.There are no standards for these experiences,When choosing a plan in the early stage of development,Changhong will conduct an overall evaluation of the program,Since this program has been chosen,It must be that Changhong feels that this way of operation is acceptable to users,If there are many users who feedback this problem after the TV is sold or return it because of this problem,Changhong will pay attention to these problems when choosing a plan or in the early stage of research and development。

In addition, if you have relatively high requirements for the details of the product, you should not buy this kind of cost-effective brand and product, you must know that cost-effective products are usually based on "the premise of completing the basic function, the lower the cost, the better"; If you buy Sony, the products of flagship brands like Samsung (of course, they can't be copycats), the user experience is generally better.

The response speed is related to the performance of the main chip, and you can set the black screen to a blue screen.

133***190 question,I'll answer,Hello,Your TV is faulty,The power switch control circuit inside the machine is faulty,Please check the switch control transistor directly?

The TV can't start for the second time, and the power supply has blue light, and the others don't respond.

Replace the filter capacitor of the ridge calendar power supply and the filter capacitor of the decoding block;

Changhong color TV has to be turned on for the second time after the chain,Press"Program"or"Standby" button to try.

Hurry up and call the after-sales service**, and call the master to come to the door for maintenance!

The quality of Changhong TV is really poor,I bought a machine that has only been around for more than a year,I actually spontaneously combusted when I looked at it,The screen and metal frame were burned and raised。 The after-sales service industry does not dare to compliment, firing like this, it is just a display screen and metal frame, and the metal frame is still a very serious wear and tear of old goods, the display clarity after the change is completely unable to achieve the previous effect, and there are black edges at all corners of the display screen, I don't know what crooked chips have been replaced inside. But the after-sales service doesn't feel the seriousness of the spontaneous combustion of their TV at all,It is even reasonable to say that the TV is not burned out,Even if the home is burned after burning,There will be insurance companies that will compensate。

Oh my God!! I was stunned This is the quality and after-sales service of their Changhong TV.

Changhong's collapsed Changhei Group, with no credit and no quality assurance, is a cheating group! The authorities should shut down!

Changhong TV is really rubbish,There is a problem with screen projection,Don't let the web page project after upgrading! It's all pits!

The character is too bad, and it is deceitful. Gome Electrical Appliances Erqi Square store spent more than 5,000, and the Changhong shopping guide packed a prototype. The ** label of the store is still attached to the TV, and I took a photo directly to the Industrial and Commercial Bureau to complain about Changhong and Gome Electric.

I don't know what to punish.,Anyway, the TV was returned.,And an extra hot water kettle.。

Quality garbage,I saw less,The screen is broken just after three years,More than 1000 to change the screen,How much is the TV。

Changhong's TV is really super super poor,I bought this TV in 2016,It broke after 9 months,The master has to pay for repairing it or not,Now it's been more than 3 years, the same problem has appeared 4 times,Every time you want money,This time650 yuan,Trade-in can only give 35 yuan,Do you say it's not garbage?

I bought Changhong TV for half a year,Look at it and watch it black,After-sales pull away the TV,It took me half a month to repair it back,Annoying thing,It's the same problem again in about four months,After-sales said what board to change550,Met a ghost,Such a big brand,Such a garbage thing produced,I don't dare to buy this brand of things in the future,I advise you to buy it if you want to,Think twice。

It's not good, rotten thing!! I supported the domestic Changhong Q5N65 I bought last year, delivered on December 24, 2018, broke on the night of February 12, 2019, and lasted for more than 1 month. Hehe, what a good TV!!

My family has just bought it for less than 3 years and the screen is flashing black,After-sales costs700Maintenance fee,My TV is only 3300 bought,Garbage brand,Garbage in garbage! Don't buy Changhong anymore, whoever buys will be pitted!

I also just bought Changhong TV with a year of break,This quality is really not flattering,Just two days after the warranty period,After-sales service doesn't say anything at all,Bad attitude,Don't buy it,Buy it and be fooled。

I also don't buy Changhong's anymore It's just out of warranty for 3 months Looking at the sudden can't turn on the machine Repair at least 500 Not ready to repair Ready to sell scrap brand and replace it.

Everyone knows that Changhong makes garbage products under the brand of military enterprises, but it is cheap Everyone is happy to buy it.

The TVs are all about the same. I'm the one who fixes TVs. Some different brands of TVs are the same except for the motherboard.

It is universal. Hisense,Changhong,Konka Many boards can be universal。 Speaking of repairs.

Your computer motherboard is broken, and there are a few that can be repaired. Isn't it all changed? It's also a small resistor.

See you understand. LETV TV has such a high definition, and it is not a Taiwanese screen used. Never mind.

You don't understand it if you talk too much.

Changhong55Inch LCD TV,My family burned out during the Chinese New Year last year,Door-to-door repair of five or six hundred,It is a few transistors on the switching power supply board that are burned,The charge is too expensive,You said that the new TV boot time has not exceeded 2 months,It will be broken when you go home for the New Year,The warranty is only 1 year,From the time of purchase, the TV is overwarranted,There is no way to pass the insurance,You can only give money,Don't hit its after-sales service if the TV is broken in the future。 Changhong TV is not good now, good garbage. The guy who repaired the TV said that our voltage is unstable, the voltage is high, I said how can it be high, it will only be low during the New Year,

I just bought it55Q5T,I regret it.,It's not clear at all.,I feel worse than my colleague's 2,000-yuan TV.,The effect is 108,000 miles away from the mall.。 The master who came to install it is also a fooling god, I have never seen such a disgusting one, anyway, it is to make you keep paying for it. Anyway, I won't buy this again, my elders also said that the previous Changhong was good, a good yarn, it really hurts me.

My Changhong TV is still a high-end chiq series,The screen went black after buying it for more than a month,After-sales **,Said that the three-pack return period can only be repaired!! The difference between repairing and new is big, and it broke down after more than a month of buying it, which shows how poor the quality is