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 UE32EH4030

Technical description and composition of the SAMSUNG UE32EH4030 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG LED
Model: UE32EH4030 UE32EH4030W
Chassis / Version: U71A / Ver: CS03
Panel: DE320AGH-C2
LED backlight: SAMSUNG 2012SVS32 3228 HD 08 Rev1.5 12041
LED driver (backlight): integrated into PSU
PWM LED driver: SLC2012M
MOSFET LED driver: AOD4184, AOD5N40
Power Supply (PSU): BN44-00492A PD32AV0_CSM
PWM Power: SSC2S110
MOSFET Power: MDF10N60G
MainBoard: BN41-01795A BN94-06136P
IC MainBoard: WT61P805, 25Q40, K4B1G1646G-BCH9, s24cs0, s24cs5, LVC244A, DRV612, NTP-7412S
Tuner: BN40-00231A DT0D40FVL084AA
Control: Remote: AA59-00602A, IR BN41-01858C BN96-23694B
Technical Specifications UE32EH4030
SAMSUNG UE32EH4030
General repair guidelines for TV LCD LED
Possible malfunctions
- SAMSUNG UE32EH4030 TV does not turn on, does not respond to the remote control and control panel buttons, indicators do not light up and do not blink.
With such manifestations, a malfunction is most likely to be detected in the BN44-00492A power module. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches (MDF10N60G) and rectifier diodes for a possible partial or complete breakdown.
In case of breakdowns of semiconductors in the secondary circuits of any converter, as a rule, it can operate in emergency short circuit mode without output voltages, and during short circuit in the elements of the primary circuit, the mains fuse and, less often, the current sensor at the source of the key are most often cut off.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM circuits SSC2S110 are usually checked by replacing with new, or obviously working.
- There is no image, but there is sound, it reacts to the remote control. Or the image appears when you turn on and immediately disappears
A malfunction is usually most likely in these cases at the backlight nodes of the display matrix. The reason for this may be a break in the LED circuit, or a problem in stabilizing their power supply.
It is impossible to check the line of series-connected LEDs without a special current source, and for this purpose it is not safe to use any voltage sources above 12V for them. Then it remains only to open the panel and check each LED separately. Usually, Chinese 9V-powered multimeters light up a single 3-volt LED, if you connect the probes in the forward direction, the red probe to the anode, and the black to the cathode. In dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as a health indicator. In the event of a LED malfunction, its zener diode will either be cut off or broken into short-circuit.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
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, you should update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - WT61P805, K4B1G1646G-BCH9, s24cs0, s24cs5, LVC244A, DRV612, NTP-7412S which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its conclusions with the board (it is diagnosed by heating).
Malfunction of the tuner BN40-00231A DT0D40FVL084AA is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be controlled by an oscilloscope.
Once again, remind users! Attempts to self-repair a SAMSUNG UE32EH4030 TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!


SCHEMATIC MANUAL ----------->  Samsung UE32EH4030 shassis U71A, U71B.
UE32EH5****, UE22ES5****, UE37EH5**** UE19ES4****, UE40EH5****, UE46EH5****, UE26EH4****, UE32EH4****

SAMSUNG UE32EH4030W / VERSION  TS01;
Panel LTJ320AP03-L;
Main BN94-05546F (BN41-01795a), PSU BN44-00492A PD32AV0_CSM,
Led Backlight SAMSUNG 2012SVS32 3228 HD 08 Rev1.5 120412.

FIRMWARE FOR  SPI FLASH 25Q40BVCIP --------------->  SAMSUNG UE32EH4030W, Main: BN94-05546F BN41-01795A, Panel: LTJ320AP03-L

  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 UE32EH4030 device:
Installed matrix (LED panel) DE320AGH-C2.
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 type AOD4184, AOD5N40 are used.
The necessary supply voltages for all nodes of the SAMSUNG UE32EH4030 television are generated by the BN44-00492A power supply module or its analogs using SSC2S110 microcircuits and MDF10N60G type power switches.
MainBoard - the main board (motherboard) is a BN41-01795A module, using microchips WT61P805, 25Q40, K4B1G1646G-BCH9, s24cs0, s24cs5, LVC244A, DRV612, NTP-7412S and others.
The tuner BN40-00231A DT0D40FVL084AA provides the reception of television programs and tuning to channels.
Posted By: FRANK at 07:39
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