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 !

Wednesday, 3 April 2019

AKAI 21CTU91BC - AKAI 21CTU93BC - AKAI 21CTU94BC AKAI SMPS SCHEMATIC - - SERVICE MODE

AKAI SMPS SCHEMATIC - AKAI 21CTU91BC - AKAI 21CTU93BC - AKAI 21CTU94BC - Service Mode

SMPS SCHEMATIC
CLICK ON THE SCHEMATIC TO ZOOM IN
Memory IC Replacement & Factory Mode Entry Procedure
  This TV uses memory IC. In the memory IC are memorized data for correctly operating the video and deflection circuits. When replacing memory IC, be sure to use IC written with the initial value of data.
PROCEDURE FOR REPLACING MEMORY IC
(1) Power off:  Switch the power off and unplug the power cord from AC outlet.
(2) Replace IC:  Be sure to use memory IC written with the initial data values.
(3) Power On:  Plug the power cord into the AC outlet and switch the power On.
(4)  Check and set SYSTEM default value:
Note: enter a factory mode method
1)  Factory remote control: Press the factory remote control up [PRESET], press again[TEST]key, appear on the television screen 'M'.
2)  Customer remote control
3)  Press  [menu]  key,  appear  the  picture menu, press few character keys 6483, the screen appears M.
4)  Press [standby] key, withdraw factory mode.
5)  The “TEST” will be displayed on the screen.
6)  Check the setting value of the SYSTEM default value of Table below. If the value is different, select items by [CH+]/[CH-] keys and set value by VOL+]/[VOL-] keys.
7) Press “STANDBY” key again and return to the normal screen.
Posted By: FRANK at 02:20
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