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 !

Thursday 7 February 2019

SONY TRINITRON KV HW212M60 - CIRCUIT DIAGRAM - LED BLINKING CODES

Sony Trinitron KV HW212M60 - Circuit Diagram - LED blinking codes

Applicable to:
KV-HW212M60 RM-W101 Thailand SCC-U94W-A
KV-HW212M80 RM-W101 ME SCC-U90W-A
KV-HW212M80 RM-W101 Saudi Arabia SCC-V10P-A
KV-HW212M80/H RM-W101 Saudi Arabia SCC-V10Q-A
(DOLPHIN GREY)
KV-HW212M81 RM-W100 ME SCC-U90X-A
KV-HW212M83 RM-W101 ME SCC-U90Y-A
KV-HW212M83/H RM-W101 Saudi Arabia SCC-V10R-A
(DOLPHIN GREY)
KV-HW212P52 RM-W101 Thailand SCC-V94V-A
Processor 
Tuner
Audio amplifier
Power supply regulator [SMPS]
The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY (1) indicator will automatically begin to flash. A description of the self-diagnosis function is explained in the instruction manual. The number of times the STANDBY (1) indicator flashes translates to a probable source of the problem. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
When an errors occurs, the STANDBY (1) indicator will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the indicator will identify the first of the problem areas.  Result for all of the following diagnosis items are displayed on screen. No error has occurred if the screen displays a "0".
 If a +B over-current is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is diagnosed first by the micro-controller is displayed on the screen.
LED blinking codes
+B overcurrent – OCP  >  Occurs when an overcurrent on the +B(135V) line is detected by pin 32 of IC001 (A board).  If the voltage of pin 32 of IC001 (A board) is more than 4V, the unit will automatically go to standby.
V-PROTECT  > Occurs when an absence of the vertical deflection pulse is detected by pin 13 of IC001 (A board).
IK – AKB > If the RGB levels* do not balance within 15 sec after the power is turned on, this error will be detected by IC001 (A board). TV will stay on, but there will be 5 times LED blinking.
POWER SUPPLY Not Good (+5V) for VIDEO PROCESSOR > Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) due to improper power supply to IC001. TV cuts off high voltage power of anode CRT. No picture will be detected. eg: IC602, IC604 go faulty.
HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to "0".
Unless the result display is cleared to "0", the self-diagnosis function will not be able to detect subsequent faults after completion of the repairs.
Clearing the result display
To clear the result display to "0", press buttons on the remote commander subsequent as shown below when the self-diagnostic screen is being displayed.
Quitting Self-diagnostic screen
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
STOPPING THE STANDBY  INDICATOR FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY  indicator from flashing.
SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as "power sometimes shuts off" or "screen sometimes goes off" that cannot be confirmed, it is possible to bring up past occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
Display => Channel-5 => Volume (--) => Power