Panasonic TV: horizontal output transistor blows off frequently
The TV is an old model CRT tv and when tested it makes a hissing sound,initially I thought the flyback transformer is bad but when I checked the output transistor I detect its faulty.I replaced it but about 10s of powering the tv on this transistor got burnt again.I test the voltage at the output transistor collector terminal and it was over 220v instead of 130v.When such situation occurs it is adviceable to check the power supply circuit and from my troubleshooting I detect this 50v47uf capacitor to be defective






I changed it along with the output transistor and the tv works perfectly when tested.

crt television fault repair

neyod
3 comments
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P3482 dc-dc converter ic in LG home theatre dvd player
The model of this dvd is shown below



The dvd is dead but there is no burnt components on the power supply board. Checking the supply output to mainboard the p-on/off gives a vcc of 3.3v while the stb is 5v but the dvd fails to power on. The p3482 ic is located at the secondary side of the power supply board and the voltages that will start the mainboard comes from this ic



This ic is not available in my area so I ordered it online


I replaced the ic and this is the dvd working perfectly. I have 3 of this dvd with me with the same fault and I had repaired 2 by changing this ic,it remains 1 with similar problem.








dvd player repair

neyod
5 comments
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BUY 32 INCH HD LED TV FOR N39,990
The TCL brand may sound strange to many but it is a brand I recommend a lot.There products are of high quality and stand the test of time. Take advantage of Jumia special promo offer and get this 32 inch HD LED TV for N39,990 before it goes back to its normal price. This offer is for a limited time so act fast now.

  Click here now to buy and check more about this LED TV,you can also pay on delivery


The TV comes with 2 HDMI,USB ports and AV and is covered by a 12months warranty.Remember to bookmark this page to make it easier if you are to return to make your purchase

     Buy the TCL 32 inch HD LED TV on jumia at best price here
electronics review

neyod
4 comments
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Red Colour on Screen LG Tv Problems
The TV is a China made LG tv and are common here in my country. People buy this TV because it is brand new and very cheap compare to buying the original type.
One of the fault common with this tv is showing only red colour on the screen as shown in the picture


The stage to quickly go to is the video amplifier board at the tube base replace the drive transistors along with the drive resistors if need be. Instantly the fault will clear away.


crt television fault repair

neyod
9 comments
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Checkout these type of resistors before condemning a dead dvd power supply
When repairing dvd power supply we get easily fed up after checking and replacing suspected faulty component but still no positive result. Due to the fact that this power supply is cheap in the market we just replace with a new one but today I want to direct you to these resistors when next you are troubleshooting this power supply probably it may be that it is the culprit blocking the power supply from working.




As seen above the resistors are of the value 2.2M or 1M and are always located at the position shown in the picture above. If you use the analog multimeter it may be somehow difficult to detect if the resistor is bad because most of this meter cannot read very high resistances but you can detect it with digital multimeter and that's why I like using the digital meters.
click here to buy cheap and affordable electronics

Do you know the resistor color codes offhand? If no you can download the chart online or drop your email in the comment box so I will forward a highly comprehensive chart to you.
electronics component tips

neyod
3 comments
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what is a smart tv
click here to buy now
The major feature that differentiate smart tvs from ordinary Led and Lcd tv is that it has an inbuilt wifi which enables it to connect directly to the internet and gives the user the opportunity to connect with friends and associates through the social media platforms like facebook,twitter,skype and the rest directly on the tv.
       One of the cheapest smart tv presently in the market is the Polystar led smart tv and comes with this amazing features
*Ability to stream youtube videos on the screen so there is never a dull moment with this tv
*Connect with friends and family on social platforms like twitter,facebook,skype and the rest
*Perform red eye reduction,photo cropping and more using the picasa app
*The tv is DLNA certified so you can easily stream videos,images and tunes from anywhere in the household

checkout the price and buyers review of this product here


electronics review

neyod
3 comments
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Sharp TV on standby mode fails to start
The sharp tv model is as shown below



When powered it starts but goes back to standby mode. When it is in standby mode the voltage at horizontal is 120v and other output voltages are of the right values. I changed the flyback transformer,tea2261 power ic but all to no avail. I decided checking capacitors at output with my digital meter and came across this cap 160v 100uf with an ESR of 16 but suppose to be within range of close to 100 or a bit above it.





I replaced it and this is the TV working perfectly.





crt television fault repair

neyod
9 comments
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LA4440 DIY Audio Amplifier
This audio player system has a sound output problem and I try replacing the IC but fail to work.The ic is tda8948 and I heard that to get a quality replacement in the market will be very difficult, that's why I decide to construct the La4440 sound circuit and use as an alternative and guess what it rocks well.







Need to construct same circuit? drop your email in the comment box and the circuit diagram will be sent to
audio amplifier

neyod
12 comments
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