REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

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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..............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 !

Saturday, 30 March 2019

SYLVANIA LCT6637 - SERVICE MODE - SMPS AND BACK-LIGHT INVERTER SCHEMATIC

SYLVANIA LCT6637 - SERVICE MODE - SMPS and BACK-LIGHT INVERTER SCHEMATIC

Service Mode_Flicker Adjustment _ Initialization _ SMPS & Back-light Inverter Circuit Diagram. Used ICs: OZ9938GN-B-O-T2 (Back-light inverter control) – ba10324af-e2 (Comparator) – UCC28600DR (Switching Control) – 2SK3568 (Switching output FET)
SERVICE MODE
* Use the service remote control unit.
* Turn the power on. (Use main power on the TV unit.)
* Press [SLEEP] button on the service remote control unit. The following screen appears.
To cancel the service mode, press [TV POWER] button on the remote control.
HOW TO MAKE A SERVICE REMOTE CONTROL FROM  normal remote control unit. (Part No. N0105UD or N0127UD) 
* Remove 3 Screws from the back lid.
* Add J1 (Jumper Wire) to the remote control CBA
FLICKER ADJUSTMENT
This adjustment is required when repairing T-CON CBA.
1. Enter the Service mode.
2. Press [2] button on the remote control unit. The following screen appears.
If Flicker Adjustment is not fit, the screen become the following [See the bottom picture]
Turn the VR1 on the LCD Module so that flash stops.
HOW TO INITILAIZE
1 To turn the power on, press [POWER] button on the normal remote control unit or the unit.
2 Use the service remote control unit
3 To enter the service mode, press [SLEEP] button on the service remote control unit.
 To cancel the service mode, press [TV POWER] button on the remote control.
4 To initialize the LCD television, press [DISPLAY] button on the normal remote control unit.
 “INITIALIZED” (red) appears on the screen.
 After few seconds (completion initialization), the screen is reset.
SMPS (Power) & BACK-LIGHT INVERTER SCHEMATICS
CLICK ON THE PICTURES TO MAGNIFY
Posted By: FRANK at 01:53
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