Technical description and composition of the SITRONICS LCD-2006 TV, type of panel and applicable modules. The composition of the modules.Sitronics
Model: LCD-2006
Panel: LCD201V02
Lamp backlight: 6 Lamp CCFL
T-CON: tv module ASSY 200500 rev2
Inverter (backlight): JSY200610 IV6201LG-5 rev. 3
Power Supply (PSU): Adapter 12V
PWM Power: BA9741F
MOSFET Power: BD5H1
IC MainBoard: TDA9352PS / N3 / 3, 24C16AN, GM5321, STV6688A, TDA8601TC2, STV8216, TDA7266D, M29F002BB
Tuner: KS-H-146 DEA
Appearance
SITRONICS LCD-2006
General repair guidelines for TV LCD
Any repair of electronic equipment begins with an external inspection of the device and diagnostics of the malfunction. In this case, you should visually carefully examine all the elements of the Sitronics LCD-2006 TV, both internal and external. Sometimes, only by some signs can we determine the further direction of the localization of the malfunction. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
Malfunctions of the adapter power module can be expressed in different ways, for example, Sitronics LCD-2006 does not turn on at all and the control lamps on its front panel do not light up and do not blink, there are no signs of operability. When diagnosing and repairing the adapter power supply, you must first check the fuse, and if it breaks, you should check the BD5H1 power switch and rectifier bridge diodes for avalanche (thermal) breakdown.
The reasons for the breakdown of the power switch of the flyback converter of the power module can be different, for example, a malfunction of semiconductor elements or electrolytic capacitors in the stabilization circuits of the primary circuit, as well as a failure in the operation of the BA9741F PWM controller chip or broken resistors in its bundle.
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
If Sitronics LCD-2006 has no image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working.
Repair of the JSY200610 IV6201LG-5 rev.3 inverter can often be somewhat complicated by the use of special protection circuits, which are designed to disconnect it in emergency cases for fire safety when the lamps are depressurized, or short circuits or open circuits in high-voltage circuits and connections. Sometimes it becomes necessary for diagnostic purposes to block the protection circuits in order to be able to make the necessary measurements at the control points of the circuit.
All necessary precautions must be observed when disabling the inverter protection during diagnostics and not leaving it disconnected after the repair is completed.
Once again, we remind users of TV: you should not make attempts to repair it yourself without the appropriate knowledge, experience and the necessary qualifications! Trust the repair only to professionals with sufficient experience in the field of electronic equipment repair.
SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> SITRONICS LCD-2006
Main technical specifications:TFT technology, Diagonal 20-inch, 640 x 480, 4: 3, Response time 25 ms, Brightness 450 cd / m, Dynamic contrast 350: 1: 1, Viewing angle 176 °
Main features of the SITRONICS LCD-2006 device:
Installed matrix (LCD panel) LCD201V02.
The matrix control uses the Timing Controller (T-CON) tv.
To power the backlight used inverter JSY200610.
To power all the internal components of the SITRONICS LCD-2006 TV, an external adapter 12V type is used with BA9741F microchips and BD5H1 type power switches.
MainBoard - the main board (motherboard) includes TDA9352PS / N3 / 3, 24C16AN, GM5321, STV6688A, TDA8601TC2, STV8216, TDA7266D, M29F002BB and others.
The KS-H-146 DEA tuner provides television reception and channel tuning.