Technical description and composition of the ROLSEN RL-32A03105U TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-32A03105U
Chassis / Version: RSAG7.820
Panel: LTA320AP02
T-CON: 320AP03C2LV0.1
Power Supply (PSU): HLP45B01
MainBoard: RSAG7.820.1637
IC MainBoard: MT8222ARSU, TDA9886TS, MX25L3206EM, FT24C16.
Tuner: TDQ-6FT / W126H
Appearance
ROLSEN RL-32A03105U
General recommendations for TV LCD repair
Repair of a ROLSEN TV with RSAG7.820 chassis should begin with a careful external examination of all its constituent elements and modules. Many visible changes in the state of elements make it possible to determine the further direction of troubleshooting and localization of the defect. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as to check the connected elements and assemblies.
In the absence of any signs of operability, when the ROLSEN RL-32A03105U does not turn on and does not signal anything with the control lamps on the panel, there is a possibility of a malfunction of the HLP45B01 TV power module. The power supply regulator of the control processor on the motherboard may also be faulty with the same manifestations. In general, first of all, it is necessary to check the electrolytic capacitors of the filters of the secondary rectifiers and the fuse at the mains input. If it is cut off, then the diodes of the rectifier bridge and the key transistor of the converter, which can be located either on a separate heatsink or integrated with a PWM controller into a common microcircuit, should be checked for a breakdown of PN junctions. Options are possible.
The reasons for the breakdown of the power switch in switching power supplies (SMPS) 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 a PWM regulator microcircuit or breaks in resistors in its strapping.
If the ROLSEN RL-32A03105U has no image, but there is sound, there is a possibility of a malfunction of the backlight lamps or their power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are in good working order. When disabling protection for diagnostic purposes, it must be remembered that in this case there is a risk of failure of the power elements of the inverter. Upon completion of the diagnosis, all standard protection circuits must be restored.
In cases of attempts to repair the motherboard RSAG7.820.1637, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating. In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - MT8222ARSU, TDA9886TS, MX25L3206EM, FT24C16. to new or known serviceable ones. In cases where BGA technologies are used, defects are usually localized by heating.
Attention to the owners! Attempts to repair the ROLSEN RL-32A03105U TV on your own are not recommended by the manufacturer and can lead to serious negative consequences!
Additional MainBoard RepairThe appearance of the MainBoard RSAG7.820.1637 is shown in the figure below:
RSAG7.820.1637
RSAG7.820.1637 can be used in TVs:
BBK LT3218SU (Panel LTA320AP02 S07), BBK LT3218SU (Panel LTA320AP02), ROLSEN RL-32A03105U (Panel LTA320AP02), ROLSEN RL-32A09105F (Panel LC320WUN (SA)(B4)), ROLSEN RL-32A09105U (Panel LTA320AP05).
The main features of the ROLSEN RL-32A03105U device:
Installed matrix (LCD-panel) LTA320AP02.
Matrix control uses Timing Controller (T-CON) 320AP03C2LV0.1.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-32A03105U TV is carried out by the HLP45B01 power module, or its analogs.
MainBoard - the main board (motherboard) is an RSAG7.820.1637 module, using the MT8222ARSU, TDA9886TS, MX25L3206EM, FT24C16 microcircuits. and others.
The TDQ-6FT / W126H tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AP02
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 5000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
