Technical description and composition of the ROLSEN RL-26D60 TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-26D60
Chassis / Version: PLHM01-01
Panel: LC320W01
Inverter (backlight): Master + Slave
Power Supply (PSU): PS-3200
PWM Power: VIPer22, L6562, L6598
MOSFET Power: STW20NM60, STP11NM60
MainBoard: PLHM01-01 Rev03
IC MainBoard: PQFP256, STV8217, TDA7297D
Tuner: TAUM-W101D
RL-26D60 Specifications
ROLSEN RL-26D60
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- ROLSEN RL-26D60 TV does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.
In such cases, you should start looking for a malfunction in the PS-3200 power supply circuits. It is necessary to measure its secondary output voltages, and if they are absent, check the power switches (STW20NM60, STP11NM60) and rectifier diodes in the converters for a short circuit.
In case of any breakdowns of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of the PWM regulator, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) VIPer22, L6562, L6598 are usually checked by replacing them with new ones, or knowingly working.
- There is no image, there is sound, it reacts to the remote control, the channels are switched. In some cases, the image appears when turned on and disappears immediately.
These manifestations can be triggered by the power module, or by defects in the inverter, as well as by skewed currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, you should ring the power switches in its converter for breakdown and the secondary windings of the transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the PLHM01-01 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). Complicated repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace elements PQFP256, STV8217, TDA7297D. BGA chip faults are usually easy to detect by warm-up.
The malfunction of the TAUM-W101D tuner is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be monitored with an oscilloscope.
Owners of the RL-26D60 TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
The main features of the ROLSEN RL-26D60 device:Installed matrix (LCD panel) LC320W01.
A Master inverter is used to power the backlight lamps.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-26D60 TV is carried out by the PS-3200 power module, or its analogs using VIPer22, L6562, L6598 microcircuits and power switches of the STW20NM60, STP11NM60 type.
MainBoard - the main board (motherboard) is a PLHM01-01 module, using PQFP256, STV8217, TDA7297D and others.
The TAUM-W101D tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC320W01-SL20
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.7M (8-bit)
Response Time: 8/10 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 18 pcs EEFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
ROLSEN RL-26D60 LCD TV, 26 "(66 cm) in 16: 9 format. The brightness of the screen is 500 cd / m2, backlit by CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum, is 700: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and formation of a digital signal occurs in standards 480i, 480p, 576i, 576p, 720p, 1080i.
Speaker power 16 W (2x8 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, DVI HDCP. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Overall dimensions: 695x600x270 mm.
Attention! The ROLSEN RL-26D60 LCD TV panel is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!