Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!

Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday, 29 March 2019

LG HT306SF POWER SUPPLY AND POWER AMP CIRCUIT DIAGRAM _ FIRMWARE UPDATE

LG HT306SF Power Supply and Power Amp circuit diagram _ Firmware Update

LG HT306SF – HT306SH36F-S – HT306SH36SUW Home Theater System – Firmware Upgrade _ Power Amp & SMPS (Power Supply) Schematic. USED ICs LC87F5M64A_M24C16_TAS 5352

HOW TO ENTER SYSTEM INFORMATION

* Enter into SETUP menu with NO Disc in the tray.
* Put on cursor [Highlight] 16:9 wide option of TV aspect in SETUP menu.
* Press follow key in continuous using remote control. 1 > 3 > 9 > 7 > 1 > 3 > 9 > ENTER

HOW TO UPDATE THE DVD and AUDIO MICOM PROGRAMS

The Whole Sequence

> DVD program download.
> Power cord Out > In.
> Audio micom program download.
> Remote control Pause key ‘||’ + ‘1472’ for input options.
> Enter into the system information for check the version, options and check sum.
> Power Off > On.

HOW TO UPDATE THE MTK-DVD PROGRAM

* Change the filename to download as “LG_(MODEL NAME).ROM”. [Both Upper and Lower case In filename is possible] Ex.) HT306: “LG_HT306.ROM”
* Copy the file to the formatted USB, and burn it.
* Move to the USB function, and insert the USB to the set. The upgrade information will be shown on the screen.
* Remove the USB, press PLAY key of the remote control.
* Remove and reconnect the power cable when it changes to logo screen from upgrade information. Then the upgrade process is completed.

HOW TO UPDATE THE AUDIO-MICOM PROGRAM

> Change the filename to download as “(MODEL NAME)_(Version).HEX”. Only upper cases are permitted. Ex.) HT306: "HT306_0809262.HEX"
> Copy the file to the root folder of USB storage.
> Put the USB into the SET, and move to the USB function. Then the upgrade process will be started with the upgrade information.
> If the upgrade process is complete, the set will be power off automatically with “Complete” message.

HOW TO CLEAN THE LENS

If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort lens.

Never attempt to disassemble the pick-up.
Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.

POWER Supply & POWER Aamplifier CIRCUIT DIAGRAM [SCHEMATIC]