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 !

Tuesday, 24 December 2019

REPAIRING / SERVICING TV SAMSUNG LE32C454

Technical description and composition of the SAMSUNG LE32C454 TV, panel type and applicable modules. The composition of the modules.
SAMSUNG
Model: LE32C454 LE32C454E3W
Panel: LTF320AP08
Inverter (backlight): SS1320-4UH01
PWM Inverter: SSI091ASN (24pin)
MOSFET Inverter: AOD4186
Power Supply (PSU): BN44-00338D
PWM Power: FSFR1700US, FAN7530 (PFC), STR-A6052M (Standby)
MOSFET Power: 13N60N, MDS1653
MainBoard: BN41-01536A
IC MainBoard: WT61P802, SEMS18 1027B-LF, K4T1G1640F-BCF8, KFG1G16U2D, ATMLH032 2ECL, NTP-7300S
Tuner: DT0S40FVL082A BN40-00197A // BN40-00202A
Control: IR: BN96-13046D (BN41-01366A)
Technical specifications LE32C454
SAMSUNG LE32C454
General repair guidelines for TV LCD
An external examination of the external and internal elements should be carried out in a timely manner before the start of dismantling operations. Visible damage to the elements can sometimes indicate the direction of the search for the defect even before the start of the necessary measurements. 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 power supply module BN44-00338D is faulty, the external manifestations may be different, for example, SAMSUNG LE32C454 does not turn on at all and there is no indication of the indicator lights on the front panel. When repairing the power supply, it is advisable to start the diagnostics by checking the mains fuse and the electrolytic capacitors of the filters of the converter secondary rectifiers. In the event of a fuse breaking, the reason should be sought in the power semiconductor elements of the pulse converter of the main power supply. First of all, it is necessary to check the diodes of the bridge of the rectifier of the mains voltage and the power key (s) of the converter 13N60N, MDS1653 The complete inoperability of the power supply unit can be caused by a short circuit of the power elements in the primary circuit, followed by an open fuse, or a short circuit in the loads.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur for no reason and you should look for other faulty circuit elements that could provoke a defect. This can be dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as dangling resistors or punched semiconductor elements in the stabilization circuits. Possible defective PWM FSFR1700US, FAN7530 (PFC), STR-A6052M (Standby) chips from the manufacturer.
If SAMSUNG LE32C454 does not have an image, but there is sound, there is a possibility of a malfunction of the backlight or power converter. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are working. It must be borne in mind that in cases of inverter protection shutdown (for diagnostic purposes), there is a risk of failure of the power elements of the inverter and special care should be taken. After carrying out repairs, the protection circuit must be restored for further safe operation of the TV.
Repair or diagnostics of the BN41-01536A motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update the software (software). Complex repair of MB (SSB) is possible only in the conditions of a service center with the necessary equipment. Verification or replacement of elements WT61P802, SEMS18 1027B-LF, K4T1G1640F-BCF8, KFG1G16U2D, ATMLH032 2ECL, NTP-7300S requires the necessary training and professional skills in repairing modules at the component level. Problems associated with the use of BGA soldering technologies can sometimes be diagnosed by warming up.
Before changing the tuner DT0S40FVL082A BN40-00197A // BN40-00202A, if it is not possible to tune to television channels, make sure that there are supply voltages that must be measured at the corresponding terminals of the tuner and check the software for correctness. The pulses of the data exchange of the tuner with the processor can be controlled by an oscilloscope
Attention to users! Self-repair of a SAMSUNG LE32C454 TV without the appropriate qualifications and experience can lead to its complete non-repairability!


SCHEMATICS ---> Samsung Chassis N82A.
 
FOR MODELS:   Samsung LE32C53***, LE37C53***, LE40C53***, LE46C53***, LE32C57***, LE37C57***, LE40C57***, LE46C57***, LE32C55***, LE37C55***, LE40C55***, LE46C55***, LE26C45***, LE32C45***


 The appearance of the MainBoard BN41-01536A is shown in the figure below:
BN41-01536A
BN41-01536A can be used in TVs:
SAMSUNG LE37C530F1W (Panel T370HW03 VG xxxxG), SAMSUNG LE37C550J1W (Panel T730HW03), SAMSUNG LE32C454 LE32C454E3W (Panel LTF320AP08), SAMSUNG LE26C454 LE26C454E36004 Panel.






 
The appearance of the power supply

Main features of the SAMSUNG LE32C454 device:
Installed matrix (LCD panel) LTF320AP08.
The SS1320-4UH01 inverter is used to power the backlight, controlled by the SSI091ASN (24pin) PWM controller. As power elements of the inverter, keys of the AOD4186 type are used.
The necessary supply voltages for all nodes of the SAMSUNG LE32C454 TV are generated by the BN44-00338D power module or its analogs using the FSFR1700US, FAN7530 (PFC), STR-A6052M (Standby) microcircuits and 13N60N, MDS1653 power switches.
MainBoard - the main board (motherboard) is a module BN41-01536A, using microchips WT61P802, SEMS18 1027B-LF, K4T1G1640F-BCF8, KFG1G16U2D, ATMLH032 2ECL, NTP-7300S and others.
Tuner DT0S40FVL082A BN40-00197A // BN40-00202A provides the reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTF320AP08
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.68x392.26 mm
Posted By: FRANK at 07:37
TAG: , , ,