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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Wednesday, 19 August 2020

REPAIRING / SERVICING TV ROLSEN RL-16L11

Technical description and composition of the ROLSEN RL-16L11 TV, panel type and modules used. The composition of the modules.
ROLSEN LED
Model: RL-16L11
Chassis / Version: T. VST26.12C
Panel: LP156WH2 (TP) (B1)
T-CON: 6870S-0945E LP156WH2-TPB1 Non-removable VPP1420, SM4003
Power Supply (PSU): Adapter ADP005-120250 12v; 2.5A
MainBoard: T. VST26.12C
IC MainBoard: TSUMV26KE-LF, SCM330A, TDA1517P, N.ITE6251.1.B 11326
Tuner: ET-6T1E-LF-108W-A
ROLSEN
Model: RL-16L11
Chassis / Version: T. VST26.12C
Panel: T156S01-L01 Rev0.1
T-CON: CN.ITE6251.1B 11326 IT6251FN
Inverter (backlight): CEC-LD2407 Rev22H
Power Supply (PSU): CEC-LD2407 Rev22H
PWM Power: PWM SOT23-6
MOSFET Power: SVD4N60F.
MainBoard: T.VST26.12C 11331
IC MainBoard: TSUMV26KE-LF, YD1517P
Tuner: ET-6T1E-EF108WR3
RL-16L11 Specifications
ROLSEN RL-16L11
General recommendations for TV LCD repair
ROLSEN TV made on the T. VST26.12C chassis, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. Many visible changes in the state of elements make it possible to determine the further direction of troubleshooting and localization of the defect. Electrolytic capacitors of filters with a swollen case, as well as ring cracks formed in the soldering of the leads of heating elements or a layer of coal on burned out resistors sometimes prompt the repairman about the causes of the malfunction and the possible consequences.
Malfunctions of the CEC-LD2407 Rev22H power supply module can be expressed in different ways, for example, ROLSEN RL-16L11 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. 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.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (SMPS) it does not fail by itself without reasons that should be looked for by checking other elements of the primary circuit - electrolytic capacitors, PWM controller DP = S01 (6 ), which can only be checked by replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If ROLSEN RL-16L11 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 the protection in order to ensure the possibility of diagnosing the malfunction, special care should be taken, and after all repair work is completed, it is imperative to restore the circuits and the performance of the LED driver protection for the further safe operation of the TV.
If the motherboard T. VST26.12C 11331 is faulty, first of all it is necessary to check all linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes it is possible to check the health of the MB only by replacing it. Often the MB (SSB) board needs to be replaced in the event of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - TSUMV26KE-LF, YD1517P and replace the failed chips with new ones. Some malfunctions can be associated with the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.

Attention to the owners! Attempts to repair the ROLSEN RL-16L11 TV on your own are not recommended by the manufacturer and can lead to serious negative consequences!


DOWNLOAD FIRMWARE FOR SPI FLASH -----------> ROLSEN RL-16L11, Main: T. VST26.12C, Panel: LP156WH2 (TP)(B1)

 The main features of the ROLSEN RL-16L11 device:
Installed matrix (LCD panel) T156S01-L01 Rev0.1.
The matrix is controlled by the Timing Controller (T-CON) CN.ITE6251.1B.
The CEC-LD2407 inverter is used to power the backlight.
The formation of the necessary supply voltages for all nodes of the ROLSEN RL-16L11 TV is carried out by the CEC-LD2407 power module, or its analogs using PWM SOT23-6 microcircuits and SVD4N60F power switches ..
MainBoard - the main board (motherboard) is a T.VST26.12C module, using TSUMV26KE-LF, YD1517P and others.
Tuner ET-6T1E-EF108WR3 provides reception of television programs and tuning to channels.
Information from an alternative source:
ROLSEN RL-16L11
Panel type (matrix): LP156WH2 (TP) (B1),
Motherboard: KB-6160, TSUMV26KE-LF, SCM330A, TDA1517P, Tuner: ET-6T1E-LF-108W-A
T-con: P / N: 6870S-0945E LP156WH2-TPB1 Non-removable, VPP1420, SM4003, Module: N.ITE6251.1.B 11326
PSU: ADP005-120250 External, 12v; 2.5A

 ROLSEN RL-16L11 TV with LCD T156S01-L01, 16 "(41 cm) diagonal in 16: 9 format. The required screen brightness of 250 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 50,000: 1 is achieved by special control of LED operation The LED panel of this TV is equipped with edge LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM , NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards.
The power of the sound system of 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI. 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 30 watts.
Overall dimensions: 402x313x160 mm.
TV weight: 2 kg.
Attention! Panel T156S01-L01 Rev0.1 of the ROLSEN RL-16L11 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.