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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Monday, 27 January 2020

REPAIR / SERVICING TV PHILIPS 32PFL7605H

Technical description and composition of the PHILIPS 32PFL7605H TV, type of panel and applicable modules. The composition of the modules.
PHILIPS LED
Model: 32PFL7605H / 60
Chassis / Version: Q552.1E LA
Panel: LC320EUH (SC) (A6) code 265 // code 286 p / n: 932227577682
LED backlight: 3660L-0346A
LED driver (backlight): DPS-199DP-4, DPS-199DP-1
PWM LED driver: LDDA003A (24pin) DDA002B (19pin)
Power Supply (PSU): DPS-199DP-4 2722 171 9096 REV: 00 2722117190171
PWM Power: ICE3BS3LJ, NCP1608B (PFC), DDA002B
MainBoard: 3104_313_63643 3104 313 63643 310432814922
IC MainBoard: TL2429MC. XC9572XLT 17113E
Tuner: TH2603
PHILIPS LED
Model: 32PFL7605H / 60
Chassis / Version: Q552.1E LA
Panel: LC320EUH (SC) (A2) p / n: 932227890682
LED backlight: 3660L-0346A, 32 V5.5 Edge FHD Rev4.0 2A-Type / 2B-Type
LED driver (backlight): DPS-199DP-1A 272217190196 //, PLDC-P971B 272217190314
PWM LED driver: DDA003A, DDA002B
MOSFET LED driver: FSQ510
Power Supply (PSU): DPS-199DP -1A 272217190196 //, PLDC-P971B 272217190314
PWM Power: ICE3BS3LJ, NCP1608B (PFC), DDA002B
MainBoard: 3104_313_63643 3104 313 63643 310432814922
IC MainBoard: 17113E LT106RT, 8520 (8), TL2429MC, TPA3123D2 (24), SiI9187ACNU, ST1S10PH
Tuner: TH2624
Control: IR: GWA7.820.675-2 (HT)
PHILIPS LED
Model: 32PFL7605H / 60
Chassis / Version: Q552.1E LA
Panel: LC320EUH-SHA2 code 265 p / n: 932227890682
LED driver (backlight): DPS-199DP-1 2722 171 9071
PWM LED driver: DDA002B, DDA003A
Power Supply (PSU): DPS-199DP -1 2722 171 9071, 2722 171 9096
PWM Power: 3BS3LJ (ICE 3BS3LJ), NCP1608B (PFC), G1012 (8 pin), DDA002B
MainBoard: 3104_313_63643 3104 313 63643 3104 328 14922
Tuner: 3104 328 61271
Control: RC2683203 / 01 3139 238 19861 boat
Specifications 32PFL7605H
PHILIPS 32PFL7605H
General repair guidelines for TV LCD LED
Repair and diagnostics of any electronic device, in particular PHILIPS 32PFL7605H / 60, it is advisable to start with a careful external examination of internal and external elements. According to some external signs of a change in the state of some elements, it is sometimes possible to make assumptions about the nature of the defect, as well as determine the further direction of the troubleshooting. Carbonized paint on the upper layer of resistors, electrolytic capacitors of rectifier filters swollen after boiling, cracked soldering at the terminals of heating elements or transformers can often suggest the cause of the defect and possible consequences.
If the power supply module DPS-199DP-1 2722 171 90171, 2722 171 90196 fails, the external manifestations may be different, for example, PHILIPS 32PFL7605H 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. First of all, it is necessary to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse is cut off in the power supply, in most cases a breakdown of the power key (s) is detected, which can be integrated with the 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.
It should be borne in mind that in the practice of repair it is extremely rare that key transistors in switching power supplies (SMPS) fail for no reason that should be sought by checking other components, for example, a breakdown of the key can provoke faulty elements of the damper circuits, or dried electrolytic capacitors or dangling primary resistors BP circuits involved in the stabilization process. In this case, all semiconductor elements of the strapping of the PWM regulator chip 1608B (8) 3BS3LJ G1012 (8), which it is desirable to check by replacement, are subject to verification.
Sometimes the PHILIPS 32PFL7605H TV does not have an image, but there is sound, or the image appears and immediately disappears. In this case, there is a high probability of a malfunction of the converter for the backlight LEDs of the LC320EUH-SHA2 LED 9322 278 90682 code 265, or an open circuit in the LED circuit is possible. In such cases, first of all, it is necessary to verify the serviceability of all the electrolytic capacitors of the filter by supplying the LED driver itself, including in the power supply unit (power supply unit).
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.
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.
In cases of attempts to repair the motherboard SSB 3104 328 14922, it is necessary to check the operability of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
If the TV works normally with external devices But it doesn’t tune to television channels, the tuner may have a failure 3104 328 61271. In such cases, you should first make sure that there are supply voltages on its corresponding terminals, as well as varicap power (30-33V).
Once again, remind users! Attempts at self-repair of the PHILIPS 32PFL7605H TV without the appropriate qualifications and experience can lead to its complete non-repairability!


Service manual and schematic diagram 32PFL7605H/60 Chassis Q552.1E LA




  The appearance of MainBoard 3104_313_63643 is shown in the figure below:
3104_313_63643
3104_313_63643 can be used in TVs:
PHILIPS 32PFL5405H/60 (Panel LC320WUY (SC)(A1) code 278 p/n: 9322 257 14743), PHILIPS 32PFL6605H/60 (Panel LC320EUH(SC)(A6) code 298 (286 )), PHILIPS 32PFL7605H/60 (Panel LC320EUH (SC)(A6) code 265 ), PHILIPS 32PFL7605H/60 (Panel LC320EUH(SC)(A2) p/n: 932227890682), PHILIPS 32PFL7605H/60 (Panel LC320EUH-SHA2 code 265 p/n: 932227890682), PHILIPS 37PFL5405H/60 (Panel LC370WUY(SC)(A1) code 277), PHILIPS 37PFL7605H/60 (Panel LC370EUH(SC)(A1) p/n: 932227578682), PHILIPS 37PFL7605H/60 (Panel LC370EUH(SC)(A2)), PHILIPS 40PFL7605H/12 (Panel LK400D3LA93 (SRPJ) B p/n: 932227619682), PHILIPS 42PFL5405H/12 (Panel LC420WUY), PHILIPS 42PFL5405H/60 (Panel LC420WUY (SC)(A1) code 276 p/n: 932227573682), PHILIPS 46PFL7605H/60 (Panel 9322 276 21682 code 271), PHILIPS 52PFL8605D/77 (Panel 52 ).
PSU Advanced
The DPS-199DP power module is designed using a Power Factor Correction (PFC) scheme to eliminate multiple AC harmonics introduced into the power supply by the device. The PFC assembly is a Step-Up Converter based on the NCP1608B PWM controller, which evenly distributes high-frequency impulses of the charging current of the electrolytic capacitor of the rectifier filter of the mains voltage over a period of 50 Hz. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the network frequency), but by the elements of the converter. As a result, a change in the amplitude of the pulses (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The availability of the increased voltage (about + 380V) in the operating mode on the capacitor of the line filter indicates the serviceability of the PFC node.
The appearance of the power supply
Main features of the PHILIPS 32PFL7605H device:
Installed matrix (LED panel) LC320EUH-SHA2 code 265 p / n: 932227890682.
The LED driver DPS-199DP-1 is used to power the backlight LEDs, it is controlled by the PWM controller DDA002B, DDA003A.
The necessary supply voltages for all nodes of the PHILIPS 32PFL7605H TV are generated by the DPS-199DP power module or its analogs using 3BS3LJ (ICE3BS3LJ), NCP1608B (PFC), G1012 (8 pin), DDA002B microcircuits.
MainBoard - the main board (motherboard) is a module 3104_313_63643.
The tuner 3104 328 61271 provides reception of television programs and tuning to channels.
Posted By: FRANK at 06:44
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