REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Monday 17 August 2020

REPAIRING / SERVICING TV ROLSEN RL-22L1003U

Technical description and composition of the ROLSEN RL-22L1003U TV, panel type and modules used. The composition of the modules.
ROLSEN LED
Model: RL-22L1003U
Chassis / Version: T.VST29.A2B
Panel: V216BG1-LE1 REV C1
LED driver (backlight): AY1303A022173
PWM LED driver: D38490
MOSFET LED driver: ME15N10 -C
Power Supply (PSU): AY1303A022173
PWM Power: LhP36R28
MainBoard: T.VST29.A2B_12313
IC MainBoard: PCU: TSUMV59XE-Z1, Sound: 1517 P 2F654, TSUMV59XE-Z1, 25Q32RS1G
RL-22L1003UF Specifications
ROLSEN RL-22L1003U
General recommendations for TV LCD LED repair
Repair of the ROLSEN RL-22L1003U TV should begin with a careful external examination of all its constituent elements and modules. Often, according to 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 taking the necessary measurements, which will make it possible to determine a further algorithm for troubleshooting and localizing a defect. Swollen electrolytic or metal-ceramic capacitors, charred resistors, ring cracks in the soldering of the element terminals - all this can significantly help the master to determine the causes and consequences of the malfunctions in the TV.
If the TV does not turn on, none of the indicators on its front panel will light or blink. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds or any signs of operability when turned on, there is a certain probability that the AY1303A022173 power supply module is faulty and needs repair. Sometimes a problem with similar manifestations can occur only in the absence of processor power, which is typical for certain ROLSEN models. Diagnostics and repair of the common power supply should always begin with checking the mains fuse and the condition of the electrolytic capacitors of the secondary rectifier filters. Defective and swollen capacitors should be replaced with new ones. If the fuse breaks, it is advisable to check for breakdown, first of all, all the power semiconductor elements of the converter and the diode bridge of the mains rectifier, as well as the large electrolytic capacitor of the mains rectifier filter.
Mos-Fet switches used in switching power supplies (SMPS) rarely fail without reasons that must be looked for by checking other circuit elements. Breakdown is often caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or breakdown of resistors in stabilization circuits. The LhP36R28 PWM controller microcircuit can also cause a breakdown of the converter power switch.
If when you turn on the ROLSEN RL-22L1003U there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the V216BG1-LE1 REV C1 panel backlight LED circuit, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
To check the health of the LEDs, as well as the contact connections in the ruler circuit, it is necessary to disassemble the panel.
It is impossible to detect an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes.
Repair of the board and replacement of PCU microcircuits: TSUMV59XE-Z1, Sound: 1517 P 2F654, TSUMV59XE-Z1, 25Q32RS1G are carried out with the necessary equipment and the corresponding element base. Failures associated with the use of BGA soldering technologies can be localized by warming up.
Attention to the owners! Attempts to repair the ROLSEN RL-22L1003U TV yourself are not recommended by the manufacturer and can lead to serious negative consequences!


DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   ROLSEN RL-22L1003U, Main: T.VST29.A2B 12313, Panel: V216BG1-LE1 REV C1

https://1.bp.blogspot.com/-eZ6SZYGaJDI/XzfPyMQz5UI/AAAAAAABD3E/xN7VirA4rr4-KY2c2SveREMwppq_R3qBQCK4BGAYYCw/s1600/T.VST29.A2B_12313_DCE.jpg The appearance of the MainBoard T.VST29.A2B_12313 is shown in the figure below:
T.VST29.A2B_12313
T.VST29.A2B_12313 can be used in TVs:
DNS E19A00 (Panel CX185LEDM (V185B1-PE)), DNS E22A11 (Panel M215HGE-P02), DNS E22A00 (Panel CX215LEDM M215HGE-P01), DNS E16A20 (Panel TL156WH4 (TL)(N2)), ERISSON 24LEB15 (Panel M240HW01 VD), ROLSEN RL-19L1003U (Panel M185BGE-L10 Rev.C1), ROLSEN RL-22L1003U (Panel V216BG1-LE1 REV C1), ROLSEN RL-23L1003UF (Panel M230HGE-L20 Rev.C1), ROLSEN RL-23L1005UF (Panel M230HGE-L20 RevC1).
The main features of the ROLSEN RL-22L1003U device:
Installed matrix (LED-panel) V216BG1-LE1 REV C1.
To power the backlight LEDs, the AY1303A022173 LED driver is used, controlled by the D38490 PWM controller. The keys of the ME15N10 -C type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-22L1003U TV is carried out by the AY1303A022173 power module, or its analogs using LhP36R28 microcircuits.
MainBoard - the main board (motherboard) is a T.VST29.A2B_12313 module, using PCU chips: TSUMV59XE-Z1, Sound: 1517 P 2F654, TSUMV59XE-Z1, 25Q32RS1G and others.
Additional technical information about the panel:
Brand: CHIMEI INNOLUX
Model: V216BG1-LE1
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.6 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 477.417x268.416 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.3 / 3.7 (Tr / Td)
Frequency: 60Hz
Lamp Type: 12S4P WLED Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
ROLSEN RL-22L1003UF LCD TV, diagonal size 22 "(56 cm) 16: 9 format. Necessary screen brightness of 300 cd / m2 is provided by LED backlighting. Dynamic contrast ratio of 120,000: 1 is achieved by special control of LED operation. - the panels of this TV are equipped with edge lighting made of LEDs - Edge LED.The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping takes place in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 6 W (2x3 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
An external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in operating mode from the network is 45 watts.
TV weight: 4 kg.
Attention! The panel of the ROLSEN RL-22L1003UF LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.