Thursday 12 March 2020

REPAIR / SERVICING TV SHARP LC-32LE600RU

Technical description and composition of the TV SHARP LC-32LE600RU, type of panel and applicable modules. The composition of the modules.
SHARP LED
Model: LC-32LE600RU
Panel: LK315D3FZF0Y
T-CON: 4248TP CPWBX RUNTK
LED driver (backlight): RUNTKA619WJQZ
Power Supply (PSU): RUNTKA619WJQZ
PWM Power: FA5511 (8), L6562A (PFC), FA5538, VIPER17 (8)
MainBoard: DUNTKE306FM01
Control: GA771WJSA
Technical Specifications LC-32LE600
SHARP LC-32LE600RU
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular SHARP LC-32LE600RU, it is advisable to start with a careful external examination of internal and external elements. Often, based on certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are made, which will determine the further algorithm for troubleshooting and localizing the defect. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In the absence of any signs of operability, when the SHARP LC-32LE600RU does not turn on and does not signal anything with the control lights on the panel, there is a possibility of a malfunction of the TV power supply RUNTKA619WJQZ module. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. When diagnosing and repairing the power supply, first of all, replace the swollen filter capacitors of the secondary rectifiers and check the fuse and, if it is broken, it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module — rectifier diodes and transistors in the primary circuit.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator chip FA5511 (8), L6562A (8), FA5538, VIPER17 (8), which it is desirable to check by replacement, are subject to verification.
If the SHARP LC-32LE600RU does not have an image, but there is sound and the TV is controlled from the remote control, a malfunction in the backlight circuits of the LK315D3FZF0Y panel is likely. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
It is impossible to check the LED line for breaks without disassembling the panel with a multimeter or tester. For these purposes, it is necessary to open all series-connected PN junctions and a voltage of the order of tens of volts will be required, and ideally, a current source.
Repair of the DUNTKE306FM01 motherboard must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
Attention to the owners! Attempts at self-repair of the SHARP LC-32LE600RU TV are not recommended by the manufacturer and can lead to serious negative consequences!


Service manual / schematic diagram ----------->   Sharp LC-32LE600E, LC-32LE600RU, LC-32LE600S, LC-40LE600E, LC-40LE600RU, LC-40LE600S, LC-46LE600E, LC-46LE600RU, LC-46LE600S
 Service Manual with Schematic Diagram 16 pages of 2009  models LC-32LE600E, LC-32LE600RU, LC-32LE600S, LC-40LE600E, LC-40LE600RU, LC-40LE600S, LC-46LE600E, LC-46LE600RU, LC-46LE600S



 The appearance of the MainBoard 17MB60-4 is shown in the figure below:
The 17MB60-4 motherboard is made using the MSD9WB7PX-2 processor, combined with a scaler. For its work, two microchips of external random access memory (DDR) HY5PS121621C and read-only memory (ROM) NAND512-A are used. To ensure processor power, stabilizers 1.2V, 2.5V, 3.3V are used. For DDR, the voltage is 1.8V, for the power of NAND 3.3V. It is advisable to start the repair by checking the power supply of the standby mode 3.3V. Further, in the operating mode, it is necessary to check the operability of all linear stabilizers and voltage converters. If there is a backlight and no image, the power of the 5V or 12V LCD panel, depending on the type of panel used, can be measured directly on the LVDS connector. A typical malfunction is a NAND ROM software failure. At the same time, the TV does not turn on and the indicators on the panel blink. It is updated via the USB port if the software of the SPI FLASH chip in which the bootloader is located is not damaged, or if there is a mboot.bin file on the media, which can be used as standard SPI FLASH content.
17MB60-4 can be used in TVs:
SHARP LC-19LE510RU (Panel LC185EXN (SD)(A1)), SHARP LC-22LE510RU (Panel 22 "), SHARP LC-32LE510RU (Panel LC320EUN SD V1), SHARP LC-32SH130E (Panel LC320WXN / 720p HD), SHARP LC-32SH340 LC-32SH340E (Panel LC320WUN (SC)(B1) ), TOSHIBA 19EL833R (Panel V185B1-LE2 LED), TOSHIBA 26LD833F (Panel LC260EXN (SD)(A3)), TOSHIBA 32DL833R 32DL834R (Panel LC320EXN SD A2 led).
PSU Advanced
The model LC-32LE600RU uses a RUNTKA619WJQZ power supply unit using the PFC (Power Factor Correction) node - an active filter of the highest harmonics of the current consumption. In fact, it is a boost converter based on the L6562A PWM controller, which eliminates the charge current of the electrolytic capacitor of the rectifier filter directly from the network through open diodes, when its charging current is determined by its reactance.
As a result of the operation of the converter, the envelope of the high-frequency pulses of the input current of the converter will repeat the shape and phase of the input voltage. The health of the PFC node can be indirectly judged by the presence of an increased constant voltage (about + 380V) on the capacitor of the rectifier network in operating mode.
Main features of the SHARP LC-32LE600RU device:
Installed matrix (LED-panel) LK315D3FZF0Y.
The matrix control uses the Timing Controller (T-CON) 4248TP.
The LED driver RUNTKA619WJQZ is used to power the backlight LEDs.
The necessary supply voltages for all nodes of the SHARP LC-32LE600RU TV are generated by the RUNTKA619WJQZ power supply module or its analogs using the FA5511 (8), L6562A (PFC), FA5538, VIPER17 (8) microcircuits.
MainBoard - the main board (motherboard) is a DUNTKE306FM01 module.
Information from an alternative source:
SHARP LC-32LE600RU
Panel Type (Matrix): RA787-0
Motherboard:DUNTKF111, sil9187ACNU, MT8295AE, MT8292N, MP221I, SST25VF020, HY27US08121B, K4T5116306-HCF7 х2, Sound: Y148, Tuner: RTUDAA019WJQZ TDAG4-B03A
T-con: RUNTK 4248TP, VPP1501BFQ, H5PS5162FFA, ISL240, 24C64WP, TNV3056, 2902S X2, PSU & INVERTОR: RUNTKA619WJQZ F8065PA1, VIPER17L, L6562A, LCMX01200C, A393F х7, 2SC4217 х8, FA5511, 2A09404 part1, part2,

 LED TV SHARP LC-32LE600 with LCD LK315D3FZF0Y, diagonal size 32 "(81 cm) in 16: 9 format. The brightness of the screen is 450 cd / m² with LED backlighting. Dynamic contrast ratio of 2,000,000: 1 is achieved by controlling the LEDs (LED) depending on the brightness of the plot.In the manufacturing technology of the display of this model, LED (LED) backlighting is implemented.

The design and technical capabilities of the TV include watching programs and movies in high quality HD at a resolution of 1920x1080 pixels in a graphical decomposition according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Graphic processing and digital signal generation occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the sound system 20 W (2x10 W) provides two speakers. The audio processing system NICAM STEREO is used.

The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART x2, RGB, VGA, HDMI x3, RS-232. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768.
The digital tuner is capable of receiving television channels in DVB-T MPEG4 standards.
The power consumed by the TV from the network in operating mode is 60 watts.
Overall dimensions: with stand 767x554x272 mm, without stand 767x502x92 mm.
TV Weight: 12.5 kg.

Attention! The LK315D3FZF0Y panel of the SHARP LC-32LE600 LED TV is an expensive and unreliable element.
Avoid any impact on the glass and pressure on the surface of the screen to avoid damage to the LED panel!
It is also unsafe to get liquid on the screen. Sometimes one drop is enough if it flows down the glass onto the cables so that the TV becomes unrepairable.