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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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday 7 March 2020

REPAIR / SERVICING TV SONY KDL-37P5600

Technical description and composition of the SONY KDL-37P5600 TV, panel type and applicable modules. The composition of the modules.
SONY
Model: KDL-37P5600
Chassis / Version: EX2N_PEPPERMINT_AVC
Panel: T370HW02 V.B.
T-CON: 5537T04C29 185740611
Inverter (backlight): 19.37T04.020 185739511
PWM Inverter: OZ964GN
MOSFET Inverter: P2504BDG
Power Supply (PSU): 3H267W-1 147416212 G4 - PKG1 - PSC10270F M
PWM Power: SSC9503 (16pin), A6079M (Standby)
MainBoard: 1-878-999-11 B A1732291A
IC MainBoard: PNX85433EH / M2 / 2008C, NAND512W3A2CN6F, EDE5116AJBG, M25P10, M24C64TDA9995HL, M24C64, TDA10048HN
Tuner: ENG37E10KF
Control: RM-ED017 148719231
Technical Specifications KDL-37P5600
SONY KDL-37P5600
General recommendations for repairing TV LCD
It is advisable to start the repair and diagnostics of the SONY KDL-37P5600 TV with a careful external examination of the internal and external elements, including case parts, a display, buttons, and cables. Sometimes, only by some signs can we determine the further direction of the localization of the fault. Swollen electrolytic or cermet capacitors, charred resistors, ring cracks in the soldered terminals of the elements - all this can significantly help the master to determine the causes and consequences of the malfunction of the TV.
If the SONY KDL-37P5600 does not turn on, no control lights on the front panel light up and do not blink, therefore, there is a very high probability of a malfunction of the G4 power supply 147416212. When diagnosing and repairing the power supply, first of all, check the fuse and if it is broken , it is necessary to identify the cause. Often in such cases, an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes or power key.
Power switches in flyback converters fail extremely rarely for no reason and, if they are broken, it is necessary to look for a malfunction in the stabilization circuits by checking electrolytic capacitors, semiconductor devices, and resistors in the primary circuit. The cause may be a malfunction of the PWM controller chip, which can only be checked by replacing it with a new or obviously working one.
When using a power factor correction unit (PFC) in the power modules, troubleshooting becomes somewhat more complicated and requires additional experience and knowledge of their operation.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
The operation of the power circuits of the inverter and the backlight in the normal mode are controlled by special protection, which is organized for fire safety, for example, to disconnect during short circuits or breaks in high-voltage connections or when the lamps are depressurized. This protection makes it difficult to diagnose and repair the inverter.
In such cases, special care should be taken during diagnostics, and after completion of all repair work, it is necessary to restore the circuit and the inverter protection for further safe operation of the TV.
On the motherboard B A1732291A, in the event of a malfunction, you should first check the performance of all the power regulators of the microcircuits and, if necessary, update the software (software).



Owners and users of the SONY KDL-37P5600 TV must 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!




The appearance of MainBoard 1-878-999-11 is shown in the figure below:
1-878-999-11
1-878-999-11 can be used in TVs:
SONY KDL-32S5600 (Panel LTY320HA03 A02), SONY KDL-37P5600 (Panel T370HW02 V.B.), SONY KDL-40S5600 (Panel LTY400HA12 A02).
The appearance of the power supply
Main features of the device SONY KDL-37P5600:
Installed matrix (LCD panel) T370HW02 V.B ..
The matrix control uses the Timing Controller (T-CON) 5537T04C29.
To power the backlight, an inverter 19.37T04.020 is used, it is controlled by the PWM controller OZ964GN. As power elements of the inverter, keys of the type P2504BDG are used.
The necessary supply voltages for all nodes of the SONY KDL-37P5600 TV are generated by the 3H267W-1 power supply module or its analogs using SSC9503 (16pin), A6079M (Standby) microcircuits.
MainBoard - the main board (motherboard) is a module 1-878-999-11, using chips PNX85433EH / M2 / 2008C, NAND512W3A2CN6F, EDE5116AJBG, M25P10, M24C64TDA9995HL, M24C64, TDA10048HN and others.
The ENG37E10KF tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: AUO
Model: T370HW02 VB
Type: a-Si TFT-LCD, Panel
Diagonal size: 37 inch
Resolution: 1920x1080, FHD
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 819.36x460.89 mm
Surface: Antiglare (Haze 11%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2500: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: CCFL Embedded (Inverter)
Signal Interface: LVDS (2 ch, 8-bit), 51 pins
Voltage: 12.0V
Posted By: FRANK at 00:57
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