DAEWOO TV MODEL NO DTQ 20v8ssfg does not turn on only the leed
You can start by disconnecting the horizontal transistor and place a 60 watt lamp on the + B capacitor to test the operation of the source with a false load
you take out the horizontal transistor and which capacitor is 160v 100uf and on which pin of the filter I put the lamp can you give me an explanation
If I'm not mistaken that is the chassis cn001g because if you remove the thr and place a bulb in parallel on the C814 and give the ignition order and measure the voltage and see if it keeps falling
This is how the source test is done at https://drive.google.com/file/d/1XuUIlenronFkvzCgfSUDEq_mVYCbiOu8/view?usp=sharing
the horizontal is fine the proven filters are the 16v 1000uf and nothing the 250v10uf and nothing the 250v1uf nothing which I have to prove?
no boy sawing her ago and I tell her electronic friend
Ok, you are with the help of God and yours
hello ise the test of the lamp in the collector and the emitter of the horizontal transistor and when connected it turns on the light bulb but lightly and turns off and turns on and off and at b + the voltage drops and on the transistor diodes too the voltages that another operation can do fall off
If you have a capacitor check the condition of the C814 and CC820 capacitors but replace them with new parts, and repeat the test I performed
and where is also the test of the line of the b + of the flaybakc taking off the coil l805 and connect from the end of where the coil goes with the r814 and on the other side of the filter c820 of the negative pin he also preached the bulb and turned off internitently and the leed of the stamp and asia the same preached and went out and the question is that these tests of the lamp * r * can explain to me by r * vor and boy with the subsequent p * so of c * mbi * r the filters indicated by the comp * ñero electronic * because I don't have c * p * cimetro p * r * prob * rlos the c * mbio and I tell you
With this test it is verified if the source is working correctly or not, when placing a false load the source should in this case deliver in this chassis 133 stable volts and it is not doing so for that test is performed to check the behavior of the fountain. Change the capacitors and perform the test again. Are you connecting the TV directly to the power grid or to a series?
ok very good information and change the filters and nothing continues to preach and turn the leed and lamp together but that proves the stool by directly grabbing the electric reec without series and cin the horizontal transistor now that is the next thing to do I follow the steps and with the favor of GOD and your help today we will be able to ignite
Remove the yoke connector and test if the + B voltage is stabilized, the yoke in this chassis fails a lot.
but I leave the lamp on or I have to put lacerie and the horizontal tracistor is outside I connect it I work with the tracistor of conentado
Look, I already disconnected the yoke and nothing goes on and still flickering a question regarding the lamp when the boltings that grab the lamp stabilize. Does it go out?
The lamp should remain on and the voltage stable at 133 volts, check and measure the resistors R878, R879, R868, R869 and comment the results
dis blame me for not responding to you immediately I was doing some shopping but thanks for continuing with the help I will follow the steps I check and then I tell you
look at the resistance emi tester r868 as 500..ohms and the r869 ... 60ohms and the others as these measurements are not these, because mitester measures on the 10 koms scale, say what measure each of these resistances has and I compare it please
R868 = 2.2K
R869 = 1K
R878 = 100K at 1% tolerance (eye)
R879 = 15K at 1% tolerance (eye)
I think that this is what the measures look like, it will be the l804 or the l805, which in this is the L0635 817c otocoupler. and what is
Friend you can't believe that the resistances are good or not, you have to be 100% sure because they control the voltage that reaches the secondary if they are altered you will never control that source! The TL431 is a programmable zener that looks like a transistor
very good for that megusta correction that is specific is very cofiavilida gracias boy abuse the zener and I will take the measures again ago and I tell you
Isn't it that your tester has problems brother? Remember it is one that seems transistor is near the optocoupler should say 431 in the encapsulation
Yes friend I have an analogous tester that measures me well from an ohms 2 ohms ectera up to 1kohms but in the other slave of the 10kohms memide and kisses no but I already managed to measure and these are the results the r878100koms the r87915kohms and lar879 1kohms and the r8782. 2koms I also found the programmable zener I803 as I measure neste zener and the otocoupler measures in continuity mode pin 1a2 as in diode mode and in pin 3a4 it measures on the 1kohms scale it does not measure but in the 10 kohms cove by pin3a4 on the one hand it does not measure but I reverse the polarity and it measures 3ookohms well it would be the other to measure
Look at the measurements of the resistances are fine as you say change that the otocoupler or the cener why they are bad
It has to be a tl 431 that brings most of the sources including those of dvd and the opts also those serve you
Well, I will look for it but you didn't answer my question because I think these two components are damaged
Because you have already checked the resistors and they are fine, and those resistors in conjunction with those components are those that belong to the source control stage that send the information to the primary side so that the secondary voltage increases or decreases, explain to me well or did you get it friend?
clearly both things thank you very much but it will be until tomorrow we will be guided because it is already late and boy sleep we will continue tomorrow if God allows you to have happy nights and God bless you
Good morning, I would like to tell you that in I803 of a Sansung TV station of the number KA 431LZ and an autocoupler I found the number p621 and another one of L0133 -817B, these components will serve these components electronic friend and friend JUANGEL
That # # # ELECTRONIC # # b # ndono el b # rco hehehe and medejo alone and without s # lv # bid # well I really need your # llud # ll # that I have very little experience and you are I believe in # electronic # because of F # VOR I don't lose # DIG # I HAVE ANOTHER POSSIBLE #SER
With all the tests performed I recommend changing the capacitors near the C890 and C893 str
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It means that the source is not regulating in a correct way you place in multimeter you will see that the voltage is oscillating.
Do not wax the Q801 that is not feeding the I101 on pin 44 and on pin 12, it may be that the boy fails to atomize voltages in those areas and I tell you
in the q401 the 45v arrives that leaves the transistor that passes through the t401 coil in the two pins but in the other two pins of t401 that devours to measure there it arrives at the transistor finally we give stagnant I would like to continue with your help please forgive me but epodido that you understand me
What happened, my dear friends of the forum, they abandoned the ship, they took it for granted or they have a lot of work anyway, just in case I will be aware of any information, thank you
but I have a q401 of number c32 20 is from one of the lg television and the orijin # l is c32 07 it serves that '
Friends, the trancistor that he brings is tt2190 and I find a tt2140 I can say if I can use # r that without ptoblem # s
the tt2190 is of more amper than the tt2140 but can you use it already managed to solve? this post is already too long
THE MOST IMPORTANT THING IS TO BE SOLUTIONS L # SF # LL # S GR # CI # S m # ñ # n # l # amount And I tell you but TELL ME #LGO I CAN MONT # R CU # any yoke you have to get yer # L
ELCTRONIC FRIEND apres resists another time you like great taste for your # goods well blessed again #re
everything that is in the ceuenci # 6 p # sos and when i finish i commented
my dear friends of the forum very special mind of ELETRONICA AND MY FRIEND JUANNGEL THAT I thank you for your excellent collaboration are very battling graces I tell you that after that is all that they indicated to me for everything that was explained by you and everything was fine and new enñansas thanks to GOD FIRST AND YOU and my weighing I go to the horisontal exit and I focus on the yoke AND DISASSEMBLY by placing another one that had and imaguinese that happened because its good sound changes all the channels all the only thing that remains with a grate
One of the first tips I gave you to remove the yoke connector that usually fails a lot in this chassis
IF I REMEMBER AND ISE AND I DON'T KNOW THAT IN THAT OPPORTUNITY I DON'T PREDICATE, I LOOK AS IF SOMETHING USED P # S # DO WHEN PLACED BY THE OTHER DOES NOT CE IF I ENERGETISE ALL L # PL # QUET # NOCE I SEE IT AS A PHENOMENE ELECTRIC BUT GOOD TO BE # N YOU WHO S # WHO #DEDUCATE WHAT P # SO # HOUR # WELL GR # CI # S FOR ALL TOM # RE FIND # ALL THAT WELL A # QUESTION # TEGO A TR # NCISTOR HORIZONT # L NUMBER TT2140 SERVE YOU # #L QUETENI # WHAT IS TT2190 THAT MEASURE #h AND I HAVE ANOTHER THAT IS D2627 CU # L OF THE TWO I PUT YOU
good day # # and # and # place it and predict # Hor # I HAVE TO PUT THE YOKE BUT I DO NOT KNOW WHAT IS NUMBER IS IT CAN I PUT WITHOUT ME TAKING THE TR # NCISONTTOR HORIZ T # L THAT OPINES # N YOU ARE THE EXPERTS WHO RECOMMEND # CION MED # N
I AM WAITING FOR THE YOKE WHEN YEGUE I TELL YOU I HAVE A MATCH BUT I DON'T DARE TO RIDE IT BECAUSE I DON'T KNOW IF I BURNED WHAT COMPONENT YOU SAY OF THAT
electronic friend and juanjel thanks to you who fought with me and commented very important things to me to assure you that this relay relay failed to thank you very much for your help
How do I check the car in cotinuida or with the television plugged in to the rec and in what way
the optoacople is located between the primary and secondary is a 4-legged rectangle the measurement between the legs of the primary side would have to give you infinity in both directions and between the legs of the secondary side it measures you as a diode more or less and in the opposite direction infinity measure it cold (disconnected from the network) if you take it out to measure better.
https://yoreparo.com/tv/televisores/tubo/preguntas/1362230/como-medir-un-optoacoplador-con-multimetro
check this link to better understand
look at the plate it measures me exactly how you say it will be necessary to take it out
brother change the two components the otocodor and the I803 zener diode and nothing goes on and still flashes the bulbs but I realize that ledoy powuer and revive the order of switching on and off but without the lamp and the disconnected track of the flaybakc I don't know if it's because the trascistror is disconnected does not measure the village when the lamp is tested, I am all heard I say read which wax the next step to do
nad # #migo and # lomonte and ledi poweer and n # d # you with b # s # experience that lug # r originated # l # f # ll #
good morning, the issue became very long I think we are redundant, the question that the TV did not turn on but as you say in standby the voltage was maintained at 133v in the b + and when giving the order of ignition the voltages fall then the fault does not This on the primary side we will not focus on the secondary side can be horizontal or vertical stage and finally in microprocessor or jungle. Do you have the diagram of this tv at hand? If you have no more complicated review. start at the vertical disconnect the power line from the vertical ic and try to turn on and see what happens ..
Good excuse you for not answer answered is that I spend the end of the year at my sister's house good that GOD bless you the diagram I already have it and already change the vertical integrated and nothing follows and just as something else deserve
follow me friends of the forum will be in the horizontal stage where I have to measure or serve
the television itself has all those voltages, the 45 volt measures 42 volts with the connector of the cable plugged into the electric cable they remain stable but when I read the power I measure them and there are they fall or sapresen and also measure on the side of the flaybakc where are the didos that comes out of the flabakc the connected to the electric do not have voltages only to the one of b + 133v and the rest do not stain it to the inattentive when ledoy powuer the voltages appear but there is still it is not maintained now I think the problem is in horizontal output but no component can be
Did you check the horizontal transistor well?
well if the voltages remain in standby and at the time of ignition they fall that indicates that you have a short piece of the secondary side because of that the consumption is high and the TV is protected and prevents it from being damaged more.
My friend you have to check more thoroughly and arm yourself with patience, if the TV has several years of operation it can be dry capacitors of which you did not mention if you checked them or I did not tell you to check the horizontal and also did not comment on whether or not, tr driver q401 did you check or we won't start for that ...
good morning, the horizontal is the first thing that ise but apparently it is ok from base to non-dome oil and from collector to bace it measures 35ohms and from collector to emitter it measures 35ohms and from emitter to collector it does not measure and from base to emitter and from emitter to bac measure 200kohms and the q401 as I measure it I have to take it out of continuity mode or in cd
The tr is NPN type with emitter and collector damperentre diode and a resistance of 40 Ohms between base and emitter.
To measure if you have an analog tester in the x10 range, you have to place the black tip at the base and try the red tip at the emitter and collector (base-collector 50 to 60 ohms, base-emitter in both directions 35 to 40 ohms)
black tip in manifold and red in infinity mark base
black tip in manifold and red in emitter infinity mark
red tip in collector and black in base and tb in emitter in both measures around 6 ohms.
hehehe blessed never give up ever thanks JUN ANGUEL for the chicken I hundred that with the help of GOD And with his knowledge we will learn
yes but the q401 measures me from bace to collector measures me 35 and viseversa does not measure and from emitter to collector does not measure
With the red tip the emitter and the black # in the # collector and visebers # measures 500ohms and the q402 measures well
measure as you say on the 1kohms scale measure 39 ohms between collector bace and emitting bace you measure
Okay, thank you for the meal and I get to that for a while when I take action on all that
in the middle as a 2-meter and I changed the integrated vertical to the village when this TV did not turn on, I would do the strangest thing that disconnected the yoke and the television did not know why I turned it on if I didn't do it before now, but the worst case is that I start to invent and connect the yoke I had and at that moment when ledoi powuer a spark comes out I don't know exactly from the one on the yoke connector and the TV goes off, another TV fails that the horizont # l output transistor is good for me I have that number, can I put it? Why f
WATCH JUAN HELP ME WITH THE TOSHIBA THAT COMMENTS YOU WHILE WELL WITH THE YOKE IF YOU PLEASE