Wednesday, November 01, 2017

KLVS26A10, KLVS32A10 – Sony LCD TV SMPS board schematic, LED blinking codes – WAX chassis

Television system: American TV Standard
Channel coverage: VHF: 2-13/UHF: 14-69/ Cable TV: 1-125
Panel System: LCD (Liquid Crystal Display) Panel
KLV-S26A10T - RM-YA001 - BRAZIL
KLV-S26A10T - RM-YA001 - ARGENTINA
KLV-S32A10T - RM-YA001 -BRAZIL
KLV-S32A10T - RM-YA001 - ARGENTINA
WAX CHASSIS
The circuit boards used in these models have been processed using Lead Free Solder. The boards are identified by the LF logo located close to the board designation.. The servicing of these boards requires special precautions to be taken.
It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.
Due to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degrees centigrade.This requires soldering equipment capable of accurate temperature control coupled with a good heat recovery characteristics.
SMPS [Power board] circuit diagram and PWB component and foil side
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground. If the retaining screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an ohmmeter. The reading should be zero ohms.
The unit contains a self-diagnostic function. If an error occurs, the POWER LED will automatically begin to fl ash. The number of times the LED fl ashes translates to a probable source of the problem. A definition of the POWER LED flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom is difficult to reproduced use the Remote Commander to display the record that is stored at the internal NVM to specify the cause of the failure.
Diagnostic Test Indicators
When an error occurs, the POWER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas. If the errors occur simultaneously, the one that corresponds to the fewest flashes is identified first. Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.