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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Wednesday, 8 January 2020

REPAIR / SERVICING TV SAMSUNG UE40EH5007K

Technical description and composition of the SAMSUNG UE40EH5007K TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE40EH5007K
Chassis / Version: U71A / Ver. HS02
Panel: CY-DE400BGSV1L
LED backlight: 3535/3228 3V 1.5W 570mA
T-CON: CPWX5246TPZZ, RUNTK5246TPZZ, DUNTK5246TPZZ, 26C18
LED driver (backlight): integrated into PSU; 221V 289mA
PWM LED driver: SLC2012M
MOSFET LED driver: AOD4184
Power Supply (PSU): BN44-00496A PD40AVF_CSM PSLF760C04A
PWM Power: SSC2S110
MOSFET Power: AOD9N40, STI13NM60N
MainBoard: BN41-01795A BN94-05951K
IC MainBoard: WT61P805, K4B1G1646G-BCH9
Tuner: DT0D40FVL084AA
Control: AA59-00602A
Appearance
SAMSUNG UE40EH5007K
General repair guidelines for TV LCD LED
In cases where the SAMSUNG UE40EH5007K TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operability when turning on, the power module BN44-00496A PD40AVF_CSM PSLF760C04A is most likely to be faulty or there is no standby power. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is broken in the power supply, in most cases a breakdown of the power key (s) AOD9N40, STI13NM60N is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
Power switches in switching power supplies (SMPS) fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The reason may be a malfunction of the SSC2S110 PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
If the SAMSUNG UE40EH5007K does not have an image, but there is sound, there may be a malfunction of the backlight LEDs of the CY-DE400BGSV1L panel or their power converter - LED driver.
Often in the absence of backlighting, disassembling the panel is required. It is necessary to check the serviceability of the transitions of the LEDs, as well as the reliability of the contact connections in the rulers and connectors.
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.
Diagnosis and repair of the BN41-01795A BN94-05951K motherboard usually begins with a test of the performance of the stabilizers and power converters of the module chips. In some cases, a software update is required.
Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace DRAM elements: K4B1G1646G-BCH9. BGA chip malfunctions are usually easy to detect by warming up.
If a tuner DT0D40FVL084AA 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 impulses of data exchange with the processor via the I2C bus at the corresponding terminals of the tuner.
Owners and users of the SAMSUNG UE40EH5007K TV must remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to complete non-repairability of the device!

SCHEMATIC MANUAL ----------------->  Samsung UE40EH5007K shassis U71A,U71B.
UE32EH5****, UE22ES5****, UE37EH5**** UE19ES4****, UE40EH5****, UE46EH5****, UE26EH4****, UE32EH4****

LED backlight:
2012SVS40 3228 RIGHT06 REV1.5 120412; 2012SVS40 3228 LEFT06 REV1.5 120412.
LUMENS 40-3535LED-60EA-R D1GE-400SCB-R3; LUMENS 40-3535LED-60EA-L D1GE-400SCA-R3(12,04,09).

Option UE40EH5007K Version TS01
Panel: LTJ400HM08M-L; T-Con: BN41-01797A.
Main: BN41-01795A, Tuner: BN40-00239C; PSU: BN44-00496A
 
PSU SCHEMATIC ------------->  BN44-00496A

 The appearance of the MainBoard BN41-01795A is shown in the figure below:
BN41-01795A
BN41-01795A can be used in TVs:
SAMSUNG UE32EH4000 UE32EH4000W (Panel LTJ320AP03-L), SAMSUNG UE32EH5000W (Panel DE320BGM-C1), SAMSUNG UE26EH4000W (Panel T260XVN01.1), SAMSUNG UE32EH5007K UE32EH5007 (Panel LTJ320HN07-L), SAMSUNG UE32EH5047K UE32EH5047 (Panel DE320BGA-B1), SAMSUNG UE40EH5007K (Panel CY-DE400BGSV1L), SAMSUNG UE32EH5057K (Panel DE320BGA-B1), SAMSUNG UE40FH5007K (Panel CY-DF400BGLV1V), SAMSUNG UE40EH5047K (Panel LTJ400HM08-L), SAMSUNG UE40EH5057K UE40EH5057 (Panel CY-DE400BGSV1L), SAMSUNG UE40EH5050W UE40EH5050 (Panel CY-DE400BGSV1L), SAMSUNG UE40EH5000 UE40EH5000W (Panel LTJ400HM801-V), SAMSUNG UE32EH5000K UE32EH5000 (Panel LTJ320HN07-L), SAMSUNG UE32EH5000W UE32EH5000 (Panel DE320BGM-C1), SAMSUNG LE32E420E2W LE32E420 (Panel LTF320AP13), SAMSUNG UE32EH4030 UE32EH4030W (Panel DE320AGH-C2), SAMSUNG UE46EH5057K UE46EH5057 (Panel LTJ460HN05-L), SAMSUNG UE40EH5040 UE40EH5040W (Panel CY-DE400BGSV1L).
The appearance of the power supply
Main features of the SAMSUNG UE40EH5007K device:
Installed matrix (LED panel) CY-DE400BGSV1L.
The matrix control uses the Timing Controller (T-CON) CPWX5246TPZZ.
To power the backlight LEDs, a converter is used, combined with a power supply, controlled by the SLC2012M PWM controller. As power elements of the LED driver, keys of the AOD4184 type are used.
The necessary supply voltages for all nodes of the SAMSUNG UE40EH5007K TV are generated by the BN44-00496A power module or its analogs using SSC2S110 microcircuits and power switches of the AOD9N40, STI13NM60N type.
MainBoard - the main board (motherboard) is a BN41-01795A module, using microchips WT61P805, K4B1G1646G-BCH9 and others.
The tuner DT0D40FVL084AA provides the reception of television programs and tuning to channels.
Information from an alternative source:
SAMSUNG UE40EH5007KXRU Chassis U71A
Panel Type (Matrix): CY-DE400BGSV1L
Motherboard: BN41-01795A BN94-05842M, Tuner: DNTS403EL144AA BN40-0D239B
T-con: RUNTK5246TPZZ
PSU: PSLF760C04A Rev1.2 BN44-00496A, IR: BN41-01840B BN96-22413B
Remote control: AA59-00502A
Posted By: FRANK at 08:06
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