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.

How to use the site:
- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
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-40S2530

Technical description and composition of the SONY KDL-40S2530 TV, panel type and applicable modules. The composition of the modules.
SONY
Model: KDL-40S2530
Chassis / Version: WAX2T
Panel: LTY400WT-LH1
T-CON: 400WSC4LV0.4 - LJ94-01488E
Inverter (backlight): PCB2676 - A06-126268 G - PCB2677 - A06-126269 G
Power Supply (PSU): 1-871-504-12 - A1207096C G2A
PWM Power: CXD9841P, MIP2H2, FA5501AN (PFC)
MainBoard: 1-869-850-15 - 172723015 - A-1144-539-D - A1188414E + A1214950E
Tuner: BTD-HF441Z 1-869-657-12 - 172714612 - CFE-050-TUE-08
Control: RM-ED008
Technical Specifications KDL-40S2530
SONY KDL-40S2530
General recommendations for repairing TV LCD
Diagnostics of the malfunction of the TV SONY KDL-40S2530, like all others, it is advisable to start with an external examination of possible changes, both external and internal elements. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. Electrolytic capacitors of filters with a swollen case, as well as ring cracks or a layer of coal on burned-out resistors formed in the soldered terminals of the heating elements, sometimes tell the repairman the causes of the malfunction and possible consequences.
If the TV does not turn on, no indicators on its front panel are lit or blinking. Also, if the TV does not respond to the remote control and buttons, it does not make any sounds or any signs of operability when it is turned on, there is a certain chance that the G2A 1-871-504-12 power supply module is defective and needs repair. Sometimes with similar manifestations a problem can only occur in the absence of processor power, but this happens much less often. The diagnostics of the power supply should always be started by checking the fuse and, if it is broken, it is first necessary to check the rectifier bridge diodes and the power switch for the likelihood of an avalanche or thermal breakdown.
It should be remembered that the N-FET keys used in flyback converters rarely fail for no reason that must be sought by checking other elements of the circuit. 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 PWM controller chip can also cause a breakdown of the power switch of the converter.
If the power module uses an active KKM circuit (power factor control), troubleshooting is somewhat more complicated.
Sometimes the SONY KDL-40S2530 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 backlight converter, or of the lamps themselves, which can be checked by replacement. In such cases, it is necessary to verify the serviceability of all electrolytic capacitors of the filter according to the power supply of the inverter itself, including in the power supply unit (power supply unit).
Diagnosis and repair of the inverter is often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to localize a defect, its blocking is required.
In these cases, special care must be taken in view of the risk of failure of the power elements. After completing all repair work, it is imperative to restore the protection circuits for full and safe further operation of the TV by the user.
Motherboard A1214950E, AV: A1188414E, to be checked if there is no reaction to the remote control and function buttons, the standby indicator blinks or stays on. In such cases, if the power supply circuits of the microcircuits are working, a software update may be necessary.
We recommend the owners of the KDL-40S2530 TV for repair only to qualified specialists with experience! Self-repair attempts without the appropriate knowledge and skills can lead to serious negative consequences!
Service manual / schematic diagram ------------------>   Sony KDL-32/40/46S2510, KDL-32S2520/2530, KDL-40/46S2530 CHASSIS WAX2T


The appearance of MainBoard 1-869-850-15 is shown in the figure below:
1-869-850-15
1-869-850-15 can be used on TVs:
SONY KDL-26S2010 (Panel LTY260W2-L1), SONY KDL-32S2000 (Panel LTZ320WS-L05), SONY KDL-40S2530 (Panel LTY400WT-LH1), SONY KDL-46S2530 (Panel LTY460WT-LH3).
The appearance of the power supply
Main features of the device SONY KDL-40S2530:
Installed matrix (LCD-panel) LTY400WT-LH1.
The matrix control uses the Timing Controller (T-CON) 400WSC4LV0.4.
A PCB2676 inverter is used to power the backlight.
The necessary supply voltages for all nodes of the SONY KDL-40S2530 TV are generated by the power module 1-871-504-12, or its analogs using CXD9841P, MIP2H2, FA5501AN (PFC) microcircuits.
MainBoard - the main board (motherboard) is a module 1-869-850-15.
Tuner BTD-HF441Z 1-869-657-12 - 172714612 - CFE-050-TUE-08 provides the reception of television programs and tuning to channels.
Information from an alternative source:
Sony KDL-40S2530 Chassis WAX2T
Panel Type (Matrix): LTY400WT-LH1,
Motherboard: A1214950E, AV: A1188414E,
T-con: 400WSC4LV0.4,
Invertor: PCB2676 - A06-126268 G - PCB2677 - A06-126269 G
PSU: 1-871-504-12, IR Sensor: 1-869-858-15, Key Controller: 1-869-856-15
Remote control: RM-ED008
Additional technical information about the panel:
Brand: S-LCD
Model: LTY400WT-LH1
Type: a-Si TFT-LCD, Panel
Diagonal size: 40 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 885.168x497.664 mm
Surface: Antiglare (Haze 44%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 90%
Response Time: 10/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 20 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 41 pins
Voltage: 5.0V

Posted By: FRANK at 06:51
TAG: , , , ,