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 !

Friday, 6 March 2020

REPAIR / SERVICING TV SONY KDL-26U2000

Technical description and composition of the SONY KDL-26U2000 TV, panel type and applicable modules. The composition of the modules.
SONY
Model: KDL-26U2000
Chassis / Version: SE-1
Panel: LTA260W2-L19 // T260XW02 V.6
T-CON: T260XW02 V6, MAX1951, 7642ILTZ
Inverter (backlight): V0708.361 / F E206453 INVUT260ARev09
PWM Inverter: OZ964SN (20) LM393 LM324DG BD9883AF
MOSFET Inverter: P5504EDG P2804BDG
Trans Inverter: 4001Y650008 (GP) -03
Power Supply (PSU): 1-870-685-12 A-1189-415-A G1
PWM Power: A6169 (8), MCZ3001DB (18), TDA7495S, STR-A6169
MOSFET Power: 2SK3469
MainBoard: 1-870-688-11 BDTR, 1-870-677-11 BDT
IC MainBoard: TDA9886TS, VCT6973GB3 802, 24C32WP, TDA9974AHS / 8/12, D61123F1-100, CXD1968R
Tuner: 8-597-585-00 BTP-HC401
Control: RM-ED007
SONY
Model: KDL-26U2000
Chassis / Version: SE-1
Panel: T260XM02 V6
T-CON: T260XW02 V6 BD649T35 (8x4), 3232T (5), 6AIV (5), MAX1951 (8)
Inverter (backlight): 4H.V0708.361 / F
PWM Inverter: LM393, LM324DG, 0Z964SN
MOSFET Inverter: P2804BDG, P5506EOG
Power Supply (PSU): 1-870-685-12 - A-1189-415-A
PWM Power: MCZ3001DB, STR-A6169
MOSFET Power: K3469
MainBoard: 1-870-688-13
IC MainBoard: TDA9984AHS / 8/12 (CG4536), D62-1123F1 100, G253A, VDE9M0, CXA1875AM, HY27US08281A
Tuner: 1-871-490-11 - 172783611 - A-1202-962-A
Control: RM-ED007
Technical Specifications KDL-26U2000
SONY KDL-26U2000
General recommendations for repairing TV LCD
Repair of electronic equipment usually begins with an external inspection of the device and diagnosis of the malfunction. In this case, you should visually carefully examine all the elements of the SONY KDL-26U2000 TV, both internal and external. Many visible signs make it possible to determine the future direction of troubleshooting and localization of the defect. In most cases, the repairman can guess the causes of the defect and possible consequences by the characteristic signs of typical TV defects, for example, ring cracks formed in the soldering of element leads, swollen rectifier filter capacitors, charred resistors and other circuit elements.
A1189-415-A power module malfunctions can be expressed in different ways, for example, the SONY KDL-26U2000 does not turn on at all and the control lights on its front panel do not light up and do not blink, there are no signs of operability. In this case, the diagnosis and repair of the common power supply should always be started by checking the mains fuse. When it is broken, it is advisable to check for a breakdown, first of all, all power semiconductor elements of the converter and the diode bridge of the rectifier network, as well as the large electrolytic capacitor of the filter of the rectifier network and the K3469 key transistor.
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 reason may be a malfunction of the PWM controller chip MCZ3001DB, which can only be checked by replacing with a new or obviously working one.
In cases where the Power Factor Corrector (PFC) is used in the power supply, troubleshooting can be a bit more complicated.
If the SONY KDL-26U2000 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction of the display backlight, or their power converter - inverter. Sometimes when you turn on the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the inverter itself, including in the secondary rectifier of the main PSU.
Diagnostics of the 4H.V0708.361 / F inverter can be difficult due to the operation of the protection, which is organized by the designers to prevent negative consequences or fires in emergency cases, for example, during short circuits or breaks in the lamp power supply circuit, as well as their possible depressurization. To make the necessary measurements at control points or to take the necessary waveforms, repairmen have to block the protection circuits in order to be able to diagnose.
It should be remembered that when the protection is turned off, there is always a risk of failure of the inverter power elements during diagnosis. After repair, it is necessary to restore all standard converter protection circuits.
Diagnosis and repair of the motherboard S6KO09AQE8JH 642064 is carried out by checking the performance of power stabilizers or updating the software (software). Sophisticated MB board repair (SSB) is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements TDA9984AHS / 8/12 (CG4536), D62-1123F1 100, G253A, VDE9M0, CXA1875AM, HY27US08281ALVG541A, 7150LMFLVXT4053.
It should be remembered! Attempts to repair the SONY KDL-26U2000 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!
Service manual / schematic diagram ------------------->   Sony KDL-26U2000, KDL-32U2000, KDL-40U2000 CHASSIS SE-1
 The appearance of MainBoard 1-870-688-13 is shown in the figure below:
1-870-688-13
1-870-688-13 can be used in TVs:
SONY KDL-15G2000 (Panel CLAA150XP07Q), SONY KDL-20S2000 (Panel V201B1-L01), SONY KDL-26U2000 (Panel T260XM02 V6).
The appearance of the power supply
Main features of the device SONY KDL-26U2000:
Installed matrix (LCD panel) T260XM02 V6.
The matrix control uses the Timing Controller (T-CON) T260XW02.
To power the backlight, an inverter 4H.V0708.361 is used, it is controlled by the PWM controller LM393, LM324DG, 0Z964SN. As power elements of the inverter, keys of the type P2804BDG, P5506EOG are used.
The necessary supply voltages for all nodes of the SONY KDL-26U2000 TV are generated by the power module 1-870-685-12, or its analogs using MCZ3001DB, STR-A6169 microcircuits and K3469 type power switches.
MainBoard - the main board (motherboard) is a module 1-870-688-13, using chips TDA9984AHS / 8/12 (CG4536), D62-1123F1 100, G253A, VDE9M0, CXA1875AM, HY27US08281A and others.
Tuner 1-871-490-11 - 172783611 - A-1202-962-A provides the reception of television programs and tuning to channels.
Information from an alternative source:
SONY KDL-26U2000 Chassis SE-1
Panel Type (Matrix): LTA260W2-L19 (Samsung)
T-con: 260W2C4LV1.8, Invertor: INVUT260ARev09, PWM: BD9883AF
PSU: 1189-415A + ULF, STBYSTR-A6169, slave MCZ3001DB + K3469 2pcs, Sound TDA7495S Module tune 1-870-677-11, Tune 8-597-585-00 BTP-HC401, TDA9886TS Main 1-870-688-11, percent Micronas VCT6973GB3 802, eeprom 24C32WP, Video HDMI TDA9974AHS / 8/12, DVB-T Nec D61123F1-100, CXD1968R Remote: RM-ED007
Posted By: FRANK at 02:32
TAG: , , , ,