Technical description and composition of the ROLSEN RL-26A09105U TV, panel type and modules used. The composition of the modules.ROLSEN
Model: RL-26A09105U
Chassis / Version: RSAG7.820
Panel: HS26L02, CMO
Inverter (backlight): integrated into PSU
Trans Inverter: BCO-EEA17-AE
Power Supply (PSU): HLL-2600WA RSAG7.820.1646 / ROH VERG
MainBoard: RSAG7.820.1856
IC MainBoard: CPU: MT8222ARUS SDRAM: EM6AA160TSA-4G, SPI flash: MX25L3205
Tuner: TDQ-6FT
Control: EN-31603R
RL-26A09105U Specifications
ROLSEN RL-26A09105U
General recommendations for TV LCD repair
ROLSEN TV made on the RSAG7.820 chassis, like many other electronic devices, it is advisable to start repairing with an inspection of all external and internal elements. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements begin. Elements with visible damage, for example, capacitors swollen after electrolyte boiling, charred resistors in certain nodes of the circuit, as well as ring cracks in the solders, will help the master to guess the causes and possible consequences of the malfunction.
Malfunctions of the HLL-2600WA RSAG7.820.1646 / ROH VERG power supply module can be expressed in different ways, for example, ROLSEN RL-26A09105U does not turn on at all and the control lamps on its front panel do not light up or blink, all signs of operability are absent. It should be noted that the processor power regulator (converter) may be faulty with the same external manifestations. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse in the power supply is broken, in most cases a breakdown of the power switch (s) is detected, which can be integrated with the PWM controller, or a separate field-effect transistor can be used. You should also check the diodes of the rectifier bridge and the electrolytic capacitor of the mains rectifier filter.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, if they break down, it is necessary to look for a malfunction in the stabilization circuits, checking electrolytic capacitors, semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.
If, when turning on the TV, the image appears and immediately disappears, or is absent initially when turned on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (backlight power converter). In such cases, the lamps, the inverter and the common power supply module must be checked, in which the electrolytic capacitors of the rectifier filter supplying the inverter must be checked. When diagnosing a malfunction of an inverter with disabled protection, special care must be taken, because there is a risk of failure of the power elements of the inverter. After diagnostics, it is imperative to restore the protection circuits for the inverter to operate in normal mode.
In cases of attempts to repair the motherboard RSAG7.820.1856, it is necessary to check the performance 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, it is necessary to check or replace (if necessary) elements of the MB (SSB) board - CPU: MT8222ARUS, SDRAM: EM6AA160TSA-4G. In cases where a BGA processor is used, its malfunction is usually detected by the local warm-up method.
Owners of the RL-26A09105U TV are recommended to contact only qualified specialists with experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to serious negative consequences!
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-26A09105U, Main: RSAG7.820
The appearance of MainBoard RSAG7.820.1856 is shown in the figure below:RSAG7.820.1856
RSAG7.820.1856 can be used in TVs:
ROLSEN RL-26A09105U (Panel HS26L02 CMO), ROLSEN RL-42B04F (Panel LC420WUN (SB)(D2)).
The main features of the ROLSEN RL-26A09105U device:
Installed matrix (LCD panel) HS26L02, CMO.
A converter combined with a power supply is used to power the backlight lamps. The transformer BCO-EEA17-AE is installed in the inverter converter.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-26A09105U TV is carried out by the HLL-2600WA power module, or its analogs.
MainBoard - the main board (motherboard) is an RSAG7.820.1856 module, using CPU chips: MT8222ARUS, SDRAM: EM6AA160TSA-4G, SPI flash: MX25L3205 and others.
The TDQ-6FT tuner provides reception of television programs and tuning to channels.
TV ROLSEN RL-26A09105U with LCD HS26L02, diagonal size 26 "(66 cm) 16: 9. Brightness of the screen 450 cd / m² provided by backlighting CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio 3000: 1 is provided by special control of operation illumination depending on the illumination of areas in the scene.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and shaping digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, JPEG.
The power of the acoustic system of sound is 10 W (2x5 W), provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, audio x4, S-Video, component, SCART x2, RGB, VGA, HDMI x3, USB x2. 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.
The power consumed by the TV in operating mode from the network is 80 watts.
Dimensions: with stand 650x477x228 mm, without stand 650x423x95 mm.
TV weight: 14.5 kg.
Attention! Panel HS26L02, CMO LCD TV ROLSEN RL-26A09105U is its most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!