REPAIRING AND NOT THROWING AWAY

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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Friday 10 January 2020

REPAIR / SERVICING TV SAMSUNG UE40H5000AK

Technical description and composition of the SAMSUNG UE40H5000AK TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40H5000AK
Chassis / Version: U8AB
Panel: CY-GH040BGLV1V
T-CON: BN41-02111 BN95-01305A
LED driver (backlight): integrated into PSU; 162V 450mA
Power Supply (PSU): BN44-00698A L42SF_ESM
PWM Power: FA6A01N
MainBoard: BN41-02098B BN94-07136M
IC MainBoard: Nand Flash: ESMT F59L1G81A, SPI Flash; 25Q40CLSIP, RAM: K4B2G1646Q - BCKO, AUDIO: NTP7414
Tuner: BN40-00288A DNTQ403IH286A
Control: AA59-00741A
Technical Specifications UE40H5000
SAMSUNG UE40H5000AK
General repair guidelines for TV LCD LED
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the BN44-00698A L42SF_ESM power module is faulty and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of standby power. It is advisable to start the troubleshooting of the power supply module by checking the state of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. If the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in such a state of breakdown.
Mos-Fet keys used in switching power supplies (SMPS) rarely fail for no reason to look for when checking other circuit elements. Often the breakdown is caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or by a break in the resistors in the stabilization circuits. The PWM PWM controller chip can also cause a breakdown of the power switch of the converter.
If the SAMSUNG UE40H5000AK has no image, there is sound and the channels are switched, there is a possibility of a malfunction in the backlight LED circuit of the CY-GH040BGLV1V panel, or their power converter - LED driver. Sometimes, when turned on, the image appears and immediately disappears. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the backlight unit.
To check the health of the LEDs and contact connections in their power circuit, the panel must be disassembled.
To check the LED lines for breaks without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN-junctions with a simple multimeter, a voltage of the order of several tens of volts is required.
In cases of attempts to repair the motherboard BN41-02098B BN94-07136M, it is necessary to check the operability of the linear stabilizers and power converters of its microcircuits and, if possible, update the software (software). BGA chips can sometimes be diagnosed by local heating.
Often, the MB (SSB) card must be replaced in case of complex malfunctions that are difficult to detect. When trying to repair, you should check its elements - Nand Flash: ESMT F59L1G81A, SPI Flash; 25Q40CLSIP, RAM: K4B2G1646Q - BCKO, AUDIO: NTP7414 and failed chips replace with new ones. Some malfunctions may be due to the use of BGA soldering technologies in modern Main Board. Typically, such defects are detected by local heating of the chip.
If a tuner BN40-00288A DNTQ403IH286A is suspected of malfunction, first of all, it is necessary to verify the correctness of the software, as well as the presence of the necessary voltage levels and the data exchange pulses with the processor via the I2C bus at the corresponding tuner pins.
It should be remembered! Attempts to repair the SAMSUNG UE40H5000AK TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!

SCHEMATIC MANUAL ----------------> SAMSUNG Chassis: U8AA Model: UE32H5000AW, UE40H5000AW, UE48H5000AW UE50H5000AW; Chassis: U8AB Model: UE22H5000AW SERVICE MANUAL


 The appearance of the MainBoard BN41-02098B is shown in the figure below:
BN41-02098B
BN41-02098B can be used in TVs:
SAMSUNG UE32H4270AU UE32H4270 (Panel HH032AGH-R1), SAMSUNG LT24D310ES (Panel V236BJ1-LE2), SAMSUNG UE40H5000AK (Panel CY-GH040BGLV1V), SAMSUNG UE48H5270AU UE48H5270 (Panel CY-GH048BGLV1V), SAMSUNG UE32H4290AU UE32H4290 (Panel HH032AGH-R2), SAMSUNG UE40H5290AU UE40H5290 (Panel CY-GH040BGLV1V), SAMSUNG UE40J5000AU UE40J5000 (Panel CY-JJ040BGNV2V), SAMSUNG UE40H5020 UE40H5020AK (Panel CY-GH040BGSV1V), SAMSUNG UE40J5100AU (Panel CY-GH040BGSR1V), SAMSUNG T31D310EW (Panel CY-HH032AGSV1H), SAMSUNG UE48J5000AU (Panel CY-JJ048BGEV5V), SAMSUNG UE32H5020AK (Panel CY-GH032BGLV4V), SAMSUNG UE40J5120AU (Panel CY-GH040BGSV1V), SAMSUNG LT32E310EX T32E310EX (Panel CY-GJ032BGEV1V), SAMSUNG UE40H5270 UE40H5270AU (Panel CY-GH048BGLV1V), SAMSUNG UE32J5100AK UE32J5100 (Panel CY-GH032BGSV1V), SAMSUNG UE32H5000AK UE32H5000 (Panel CY-GH032BGLV1V), SAMSUNG UE48H5000 UE48H5000AK (Panel CY-GH048CSLV1V), SAMSUNG UE32J5120AK UE32J5120 (Panel CY-GH032BGSV1V).
The appearance of the power supply
Main features of the SAMSUNG UE40H5000AK device:
Installed matrix (LED panel) CY-GH040BGLV1V.
The matrix control uses the Timing Controller (T-CON) BN41-02111.
To power the backlight LEDs, a converter is used, combined with a power supply.
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE40H5000AK TV is carried out by the BN44-00698A power module, or its analogs using FA6A01N microcircuits.
MainBoard - the main board (motherboard) is a BN41-02098B module, using Nand Flash chips: ESMT F59L1G81A, SPI Flash; 25Q40CLSIP, RAM: K4B2G1646Q - BCKO, AUDIO: NTP7414 and others.
The tuner BN40-00288A DNTQ403IH286A provides the reception of television programs and tuning to channels.
Information from an alternative source:
SAMSUNG UE40H5000AK Chassis U8AB
Panel Type (Matrix): CY-GH040BGLV1V
Motherboard: BN94-07136M BN41-02098B, Tuner: DNTQ403IH286A BN40-00288A
T-con: BN41-02111 BN95-01305A
PSU: L42SF_ESM BN44-00698A
Remote control: AA59-00741A
Posted By: FRANK at 07:45
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