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 11 April 2020

REPAIR / SERVICING TV DAEWOO DLP-32C3F

Technical description and composition of the DAEWOO DLP-32C3F TV, panel type and applicable modules. The composition of the modules.
DAEWOO
Model: DLP-32C3F
Chassis / Version: SL-500P
Panel: LTA320WT-L06
Lamp backlight: 12 Lamp CCFL
Inverter (backlight): HS320WK12 INVST320N
PWM Inverter: SEM2006
MOSFET Inverter: TPC8406-H
Power Supply (PSU): FEL-3226H
PWM Power: A6252, L6598 (PWM Resonant 16pin), L6562 (PFC)
MOSFET Power: P13NK60ZFP, P6NK60ZFP
MainBoard: 4859814993-03
IC MainBoard: MST96889LD-LF, V58C2128164SB15, MX25L8005PS-15G, TDA9886T, TDA8931T, 24C64A
Tuner: UV1316 / A I H-4
Appearance
DAEWOO DLP-32C3F
General recommendations for repairing TV LCD
Possible manifestations of defects
- The DAEWOO DLP-32C3F TV does not turn on, does not respond to the remote control and control panel buttons, does not light up, and does not blink indicators.
Failure in such cases should begin to be sought in the FEL-3226H power supply circuits. Then we recommend measuring its output voltages and, if they are absent, you should check the health of the power switches (P13NK60ZFP, P6NK60ZFP) and rectifier diodes of the converters for possible short circuit.
In the event of a breakdown in the secondary circuits of the converter, it can usually fail in short circuit mode, and in case of a short circuit in the power elements of the primary circuit, the mains fuse or current sensor at the source of the key most often breaks.
The breakdown of Mos-Fet keys used in pulsed sources is often caused by malfunctions of other elements, for example, in the power supply circuit of a PWM controller, in frequency-setting or damping circuits, as well as in Negative Stabilization Feedback. PWM chips A6252, L6598 (PWM Resonant 16pin), L6562 (PFC) are usually checked by replacing with new ones, or obviously working.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
The defect can be caused by problems in the nodes or elements of the backlight of the display, or in the power supply of the lamps or the inverter.After checking all the electrolytic capacitors of the filters that are involved in the power supply to the inverter, you must ring in its converter power keys for breakdown and secondary windings of transformers for an open.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not enter the operating mode, does not respond to the remote control. The indicator on the front panel lights constantly or blinks.
Repair or diagnostics of the 4859814993 motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). When repairing an MB board, you need to check its components MST96889LD-LF, V58C2128164SB15, TDA9886T, TDA8931T, 24C64A. Defective items should be replaced. If chips with BGA soldering technology are used, a problem in its implementation is detected by the local heating of the chip.
Before replacing the UV1316 / A I H-4 tuner, if there is no tuning for the channels, first check the software and the supply voltage at its terminals. It is also necessary to make sure that the tuner and processor can exchange data via the I2C bus
Attention to users! Self-repair of a DAEWOO DLP-32C3F TV without the appropriate qualifications and necessary experience can lead to its complete non-repairability!

 FIRMWARE FOR SPI FLASH  ----------->  EEPROM DAEWOO DLP-32C3F, Main: 4859814993 -03, Panel: LTA320WT-L06


 The appearance of MainBoard 4859814993 is shown in the figure below:
4859814993
4859814993 can be used in TVs:
DAEWOO DLP-32C5 (Panel LTA320AB02), DAEWOO DLP-32C7 (Panel LC320W01(SL)(A1)), DAEWOO DLP-32C3F (Panel LTA320WT-L06).
The appearance of the power supply
Main features of the DAEWOO DLP-32C3F device:
Installed matrix (LCD-panel) LTA320WT-L06.
The HS320WK12 inverter is used to power the backlight lamps, it is controlled by the PWM controller SEM2006. As power elements of the inverter, keys of the type TPC8406-H are used.
The necessary supply voltages for all nodes of the DAEWOO DLP-32C3F TV are generated by the FEL-3226H power module or its analogs using A6252, L6598 (PWM Resonant 16pin), L6562 (PFC) microcircuits and power switches of the type P13NK60ZFP, P6NK60ZFP.
MainBoard - the main board (motherboard) is a module 4859814993, using chips MST96889LD-LF, V58C2128164SB15, MX25L8005PS-15G, TDA9886T, TDA8931T, 24C64A and others.
The UV1316 / A I H-4 tuner allows you to receive television programs and tune to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320WT-L06
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Surface: Antiglare (Haze 44%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 2000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 10/6 (Tr / Td); 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V
Posted By: FRANK at 04:51
TAG: , , , ,