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 3 January 2020

REPAIR / SERVICING TV SAMSUNG UE32EH5000W

Technical description and composition of the SAMSUNG UE32EH5000W TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32EH5000W
Chassis / Version: U71A / Ver CH01 // TH02
Panel: DE320BGM-C1 // LTJ320HN07-L
LED backlight: 2011SVS32 3228 FHD 10 Rev1.0 // 32F-3535LED-40EA, D1GE-320SC1-R2 (11,10,20)
T-CON: V320HJ2-CPE2; CM2801B, CM501, CM601
LED driver (backlight): integrated into PSU; 140V 260mA
PWM LED driver: SLC1012C (FAN7340)
MOSFET LED driver: MDD3752
Power Supply (PSU): BN44-00493B
PWM Power: 2S110
MOSFET Power: MDF11N65B
MainBoard: BN41-01795A
IC MainBoard: K4B1G1646G-BCH9, NTP-7412S
Tuner: DT0D40FVL084AA BN40-00231A
Control: AA59-00602A, IR BN96-22413D (BN41-01840B)
SAMSUNG LED
Model: UE32EH5000W UE32EH5000
Chassis / Version: U71A / CH01
Panel: DE320BGM-C1
LED backlight: 32F-3535LED-40EA D1GE-320SC1-R2, BN96-21476A
T-CON: V320HJ2-CPE2
LED driver (backlight): integrated into PSU
PWM LED driver: SLC1012C (FAN7340)
Power Supply (PSU): BN44-00493B PD32AVF_CHS
PWM Power: SSC2S110
MainBoard: BN41-01795A BN94-05548D
IC MainBoard: WT61P805, K4B1G1646G-BCH9, 24C256C4VCX, 25Q40BVSIP, NTP-7412S
Tuner: BN40-00231A DT0D40FVL084AA
Control: Remote: AA59-00602A, IR BN96-22413D (BN41-01840B)
Appearance
SAMSUNG UE32EH5000W
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32EH5000W does not turn on and does not show any signs of performance at all. Does not blink indicators and does not respond to control buttons.
Typically, with such manifestations, a defect may be caused by faulty elements in the main power module BN44-00493B. Then it is necessary to measure its output voltages and, if they are completely absent, it is necessary to check the serviceability of power switches and rectifier diodes of the converter for the presence of a possible short circuit.
In case of breakdowns of semiconductors in the secondary circuits, the converter can emergencyly operate in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse often breaks.
Mos-Fet keys used in switching power supplies usually fail due to a malfunction of other elements that can put it out of operation in key mode or provoke an excess of the maximum current or voltage. These can be circuits supplying the PWM controller, damping or frequency-setting circuits, or elements of OOS (negative feedback) in the stabilization circuit. The PWM controller (PWM) SSC2S110, in the absence of external damage and a short circuit between the terminals, is checked by replacing a known-good one.
- There is no image, there is sound, there is a reaction to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
Often in such cases, there is no LED backlight. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
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.
- The TV does not turn on, the indicator signals standby or working mode, or blinks.
Repair or diagnostics of the BN41-01795A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). If it is not possible to replace the MB board (SSB), you need to check the health of its elements - WT61P805, K4B1G1646G-BCH9, 24C256C4VCX, 25Q40BVSIP, NTP-7412S. Defective components should be replaced.
Before replacing the tuner BN40-00231A DT0D40FVL084AA, if there is no tuning for the channels, you must first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Owners and users of the SAMSUNG UE32EH5000W TV should 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!

SCHEMATICS -------------->  Samsung UE32EH5000 shassis U71A, U71B.
UE32EH5****, UE22ES5****, UE37EH5**** UE19ES4****, UE40EH5****, UE46EH5****, UE26EH4****, UE32EH4****

PSU SCHEMATIC  Samsung -------------> BN44-00493B Power supply

 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 UE32EH5000W device:
Installed matrix (LED panel) DE320BGM-C1.
The matrix control uses the Timing Controller (T-CON) V320HJ2-CPE2.
To power the backlight LEDs, a converter is used, combined with the power supply, controlled by the PLC controller SLC1012C (FAN7340).
The formation of the necessary supply voltages for all nodes of the SAMSUNG UE32EH5000W TV is carried out by the BN44-00493B power module, or its analogs using SSC2S110 microcircuits.
MainBoard - the main board (motherboard) is a BN41-01795A module, using microchips WT61P805, K4B1G1646G-BCH9, 24C256C4VCX, 25Q40BVSIP, NTP-7412S and others.
The tuner BN40-00231A DT0D40FVL084AA provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:47
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