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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Tuesday 31 March 2020

REPAIR / SERVICING TV TOSHIBA 47Z3030DR

Technical description and composition of the TOSHIBA 47Z3030DR TV, type of panel and applicable modules. The composition of the modules.
Toshiba
Model: 47Z3030DR
Chassis / Version: PE0399A
Panel: LC470WU2 (SL) (A1)
T-CON: 6870C-0166B LC470WU2-SLA1-G31
Inverter (backlight): 6632L-0404A KUBNKM136A MASTER & 6632L-0405A KUBNKM136B SLAVE
Power Supply (PSU): PE0401 V28A00055301 & PE0473 V28A00060501
PWM Power: STR-Z4579, STR-W6765, STR-A6169, FA5501AP
MOSFET Power: FP20W60C3 (PFC)
MainBoard: PE0399 A V28A00489B1 & PE0398 V28A000491A1
Tuner: TDQD4-003A
Specifications 47Z3030DR
TOSHIBA 47Z3030DR
General recommendations for repairing TV LCD
Possible malfunctions
- The TOSHIBA 47Z3030DR does not turn on. There are no signs of operability. The indicators on the front panel do not light or flash, the TV does not respond to the remote control and control buttons.
With such manifestations, a malfunction is most likely to be detected in the PE0401 power module. Then we recommend that you measure its output voltages and, if they are absent, you should check the health of the power switches (FP20W60C3 (PFC)) and the rectifier diodes of the converters for possible short circuit.
In the event of breakdowns in the secondary circuits of the converter, it can usually fail in short circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
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 chips STR-Z4579, STR-W6765, STR-A6169, FA5501AP are usually checked by replacing with new, or obviously working.
- There is no image, there is sound, it is responding to the remote control. Or immediately after turning on for a second, the image may appear and immediately disappear.
These manifestations can be triggered by the power module, or by inverter defects, as well as by the distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the power supply of the inverter are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
If in diagnosing a malfunction, it is necessary to disable the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are finished, it is necessary to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator blinks or lights constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the PE0399 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).
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the TDQD4-003A tuner. It is also necessary to check the presence of pulses of data exchange between the tuner and the processor via the I2C bus using an oscilloscope.
Attention TV owners! Attempts at self-repair of TOSHIBA 47Z3030DR are not recommended by the manufacturer and can lead to serious negative consequences!


Repair MainBoard
The appearance of the MainBoard PD2131 is shown in the figure below:
PD2131
PD2131 can be used in TVs:
TOSHIBA 27WL55R (Panel V270W1-L04), TOSHIBA 37WL55R (Panel LC370WX1 (SL) (03)).
The appearance of the power supply
Main features of the TOSHIBA 47Z3030DR device:
Installed matrix (LCD panel) LC470WU2 (SL) (A1).
The matrix control uses the Timing Controller (T-CON) 6870C-0166B.
An inverter 6632L-0404A is used to power the backlight.
The necessary supply voltages for all nodes of the TOSHIBA 47Z3030DR TV are generated by the PE0401 power module or its analogs using the STR-Z4579, STR-W6765, STR-A6169, FA5501AP chips and power switches of the FP20W60C3 (PFC) type.
MainBoard - the main board (motherboard) is a PE0399 module.
The TDQD4-003A tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: LG.Philips LCD
Model: LC470WU2-SLA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 47 inch
Resolution: 1920x1080, FHD
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 1039.68x584.82 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 1.07B (10-bit), CIE1931 92%
Response Time: 5 (G to G); 8 (MPRT)
Frequency: 120Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (4 ch, 10-bit), 92 pins
Voltage: 12.0V

Trademark: TOSHIBA, Model: 47Z3030DR.
Short from TV: LCD, 47 ", 1920x1080, 1080p Full HD, sound: 20W, HDMI: 3.
The composition includes MainBoard PE0399 A V28A00489B1 & PE0398 V28A000491A1 and LCD-panel LC470WU2 (SL) (A1).
Power Supply Unit (PSU) PE0401 V28A00055301 & PE0473 V28A00060501 power Supply.
TOSHIBA 47Z3030DR LCD TV with LC470WU2 LCD, 47 "(119 cm) diagonal size in 16: 9 format. The ratio of maximum brightness to minimum (contrast) is 1000: 1. Dynamic contrast ratio of 15000: 1 is achieved by special control of the backlight. Design and the TV’s technical capabilities include watching broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .The input high-frequency or video signal can be processed in analogue systems PAL, SECAM, NTSC. Single processing and formation takes place in the digital signal standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p.
The power of the acoustic system of sound 20 W (2x10 W) provide two speakers. It uses a NICAM stereo signal processing system and Sound Surround.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x3, S-Video, component, SCART x2, RGB, VGA, HDMI x3. An output for connecting headphones is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector is used on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024.
A digital tuner is capable of receiving television channels in DVB-T standards.
The power consumed by the TV in the operating mode from the network is 325 watts.
Overall dimensions: with stand 1132x765x352 mm, without stand 1132x710x147 mm.
TV Weight: with stand: 35.5 kg, without stand: 32.1 kg.
Attention! The TOSHIBA 47Z3030DR LCD TV panel LC470WU2 (SL) (A1) is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!
Posted By: FRANK at 07:37
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