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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Saturday 8 February 2020

REPAIRING / SERVICING TV PHILIPS 22PDL4906H

Technical description and composition of the PHILIPS 22PDL4906H TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 22PDL4906H / 60
Chassis / Version: TPM6.1E LA
Panel: LC216EXN-SDA1 code 135 p / n: 932228375682
LED driver (backlight): integrated into PSU
PWM LED driver: PF7900 S (8)
MOSFET LED driver: AO D482
Trans LED driver: 80GL19P-37-L HI-POT
Power Supply (PSU): 715G4635-P1A-H20-002U 9965 100 45539
PWM Power: LD7750RGA (8)
MOSFET Power: K6A650
MainBoard: 715G4979-M1A-000-005X
IC MainBoard: TMDS251, STA3398W,
Tuner: TDTK-G731D 9965 100 47375
Technical Specifications 22PDL4906H
PHILIPS 22PDL4906H
General repair guidelines for TV LCD LED
PHILIPS 22PDL4906H / 60, like other televisions, it is advisable to start repairing with a careful examination of the external and internal elements and modules. Sometimes, based on visible changes in the components of the device, it is possible to draw some conclusions and determine the direction of further troubleshooting even before the necessary measurements are taken. If ring cracks are detected in the soldering of the terminals of the elements or dangling connecting tracks, swollen capacitors or charred resistors - all this can be characteristic signs of the causes or consequences of an already known typical malfunction.
If the power supply module 715G4635-P1A-H20-002U 9965 100 45539 fails, the external manifestations may be different, for example, PHILIPS 22PDL4906H does not turn on at all and there is no indication of the indicator lights on the front panel. With the same symptoms, the stabilizer (converter) of the power supply to the control processor may be faulty. 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 K6A650 transistors, which are often found in such a state of breakdown in such situations.
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 chip of the PWM controller LD7750RGA (8) can also cause a breakdown of the power switch of the converter.
If the PHILIPS 22PDL4906H does not have an image, but there is sound and the TV is controlled by the remote control, there may be a malfunction in the backlight circuits of the LC216EXN-SDA1 GZ 9322 283 75682 135 panel. The LEDs or the power converter - LED driver may be malfunctioning. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to verify the operability of the electrolytic capacitors of the rectifier filter supplying the LED driver, and check the LEDs, connecting obviously known good diagnostics.
Often there is a need for disassembling the panel to check the health of the LEDs, as well as contact connections in the connectors and soldering.
When trying to detect a break in the LED lines, it should be taken into account that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
Repair of the motherboard 715G4979-M1A-000-005X must begin with the diagnosis and verification of all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - TMDS251, STA3398W, with new or obviously good ones. In cases where BGA technologies are used, defects are usually localized by the heating method.
Before replacing the TDTK-G731D 9965 100 47375 tuner, if there is no tuning for the channels, you must first check the power supply voltage at its terminals, including the power supply of varicaps (30-33V).
Attention to the owners! Attempts to repair the TV PHILIPS 22PDL4906H on its own are not recommended by the manufacturer and can lead to serious negative consequences!


Service manual and schematic diagram 22PDL4906H/60 Chassis TPM6.1E LA




 The appearance of MainBoard 3139_123_60192 is shown in the figure below:
3139_123_60192
3139_123_60192 can be used in TVs:
PHILIPS 20PF4110S/58 (Panel LC201V02 (SD)(B1)), PHILIPS 15PF4121/58 (Panel LC150X02 (TL)(01)), PHILIPS 15PF5120/58 (Panel LC150X02), PHILIPS 15PF5121/58 (Panel IDM69E1S51718 Rev:01 QD15XL16 ), PHILIPS 15PF5121/58 (Panel T150XG01 V.3), PHILIPS 20HF5474/10 (Panel LC201V02 (SD)(D1)), PHILIPS 20PF4121/58 (Panel LC201V02 (SD)(B1)), PHILIPS 20PF5120/58 (Panel A201SN02 V4), PHILIPS 20PF5320/58 (Panel LC200WX1 (SL)(01)), PHILIPS 20PFL4101S/60 (Panel LC201V02 SD B1), PHILIPS 20PFL4102S/60 (Panel LC201V02 (SD)(D1)), PHILIPS 20PFL4102S/60 (Panel LC201V02 (CD)(B1)), PHILIPS 20PFL4112S/60 (Panel LC201V02 (SD)(B1)), PHILIPS 20PFL4112S/60 (Panel LC201V02 SD D1), PHILIPS 20PFL4122/58 (Panel A201SN02 V.5), PHILIPS 20PFL5122/58 (Panel A201SN02 V.5), PHILIPS 23PFL5322/58 (Panel T230XW01 V.3), PHILIPS 23PF4321/58 (Panel T230XW01 V.2).
Main features of the PHILIPS 22PDL4906H device:
Installed matrix (LED panel) LC216EXN-SDA1 code 135 p / n: 932228375682.
To power the backlight LEDs, a converter is used, combined with a power supply unit, controlled by the PF7900 S PWM controller (8). The transformer 80GL19P-37-L HI-POT is installed in the LED driver converter. As power elements of the LED driver, keys of the type AO D482 are used.
The necessary supply voltages for all nodes of the PHILIPS 22PDL4906H TV are generated by the 715G4635-P1A-H20-002U power module or its analogs using LD7750RGA microcircuits (8) and K6A650 type power switches.
MainBoard - the main board (motherboard) is a module 715G4979-M1A-000-005X, using microchips TMDS251, STA3398W, and others.
The tuner TDTK-G731D 9965 100 47375 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC216EXN-SDA1
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.6 inch
Resolution: 1366x768, WXGA
Display Mode: IPS, Normally Black, Transmissive
Active Area: 477.417x268.416 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 300 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0 ± 0.5V