JVC AV-21BT8EES, AV -21KT1SEF
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]................ OF CHASSIS: Micom - ST92195C7B1/0EE
Memory - 24C08
SMPS - MC44608P + MTP6N60E/SSP7N60A
Video - STV2248C
Vertical - STV9306
Sound - TDA7269A
Tuner - UV1315, 1316 , 1336
RGB Amp .- TDA6108, STV5112
FBT - 1372.0093 (
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذا الرابط])
HOT - BU2508AF
Processor ST92195C3B1/OEO
Videoprots STV 2248
When you turn entered into the office. In the derivation of the duty room could hear the faint whistling . Immediately it became clear that the drop dead line transistor . Make out sounded - so it is. Changed to a new, propayal all over the base . Frankly in a hurry ( pressed for time ) . Included . TV starts up again and it was noised as be something hem . There was a smell of burning . He looked - burned R639. He took off his board , took away with him. The next day netoropyas examined - the cause of all ills was a bad contact in the reservoir S621 vyhldnogo transistor . Bleached resistor R639 was replaced by 10 com . ( like this should be the resistance of the circuit). Including - silence . That's really the second day, I'll bet - I can not understand why there is no run. Des Lombards, STV 2248, unsolder TDKS , check for pulse start - they are not . Nutrition STV 2248 - okay . Substituted S621 , S618 - did not help.
I can not understand what was going on - loaded up ugliness - help , help they can ....
Thank you
Well, then switch off S646 . The pulses must be at 48pin !
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]And the launch equipment (PPE) should be checked on an oscilloscope conclusions STV2248
with the power off with the withdrawal of three TR601. Then the closer will become clear cause malfunction
" He took off his board , took away with him. "
This type of chassis ?
A osku also took off ?
Starting something to do with oskoy ?
And the fact of the posts somehow do not understand where behaving repair
Answer to row :
1 . Current , respectively, grew out of a poorly propayanoy S621 , which subsequently propayal ( and later substituted ).
2 . C619 unsolder and measured the ( now try to substitute )
3 . Osku loading the pipes from 54 (although I think that the initial launch should be without it ).
4. Pulses start checking ostsilografom .
|
Measured the D605 at 200 IOM . - a drain on 7mom - Dolno do not know whether to be so - temporarily Framed HER307
Jettisoned three output TR601, vypayal S646 .
Pulse start NO !
Can percent flew ? ?
Although pulses SDA and SCL are .....
Damn what else can be ...
Someone will tell whether it possible to replace ST92195C3B1/OEO
Vestel / T3X210
on ST92195C3B1/MBP
OEM STTV V2.1
Jettisoned three output TR601, vypayal S646 .
Pulse start NO !
Can percent flew ? ?
Although pulses SDA and SCL are .....
Damn what else can be ...
|
Certainly percent. But he is usually called STV224x
Did not rush me at once prots.Impulsy run times can be evaluated , whether it appears at all, in principle, only the very first time on the sweep of the oscilloscope 10 -20mS ( HR ) , they appear on a split second and if the percent found crashed somewhere Then once they chopped off , and where you look - pulses directly at the foot of the processor ? And it is cut off from the planar resistor per cent in the scheme .
Has found dead S643 . Replace - the result is the same.
With the introduction of television into the office and back osilograf catches only splash . The presence of pulses is not observed.
Incidentally in this chassis, if there is no frame , then blocked impulse line ?
He remembered that 2 times a 11AK the situation was very similar , was not run for a second row , power supply immediately went into defense, and it was - the closure of 180V power video amplifier , pierced TDA6107, 6108.Pomnyu very surprised if a smart defense.
By the way, there are still protecting at breakage of the heater ..
All thanks to Romney - TV repaired for a long time - небыло time to reply !
Turned out to be dead R426 2.2 com R426 croaked .
Love affairs resolved through lichku , so people will not embarrass , but to repair only in the Forum to write, to be honest people had seen it all
Agreed
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]| I remember very surprised if a smart protection . |
I put something that is at hand , if only for food approach and on weekends U? and diagonally.
Legs are used to cut ...
|
I put something that is at hand , if only for food approach and on weekends U? and diagonally.
Legs are used to cut ... |
In such cases, the amounts due : Hands would be cut off !
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة] what to do if sometimes strochnika no in sales.
I'm yesterday's old 11AK30A11 set of Orion ( native worth more 1000r ) , goes perfectly , cut all 4 tracks .
But , icon ...
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]How HR fits ???????? HR8730 or HR8029 ?????? Weácan experts at
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]If the marking lost 1 (JF050
1-2515 ) is HR8730.
8029 to 19 chassis is ( for the diagonals more than 21 ") .
Look on the diagonal is less than or equal to 21 " - puts 8730 .
If more - 8029 .
JF 0501-2515 = HR8730 yes it is
Ingredients: prots.st92195c7b1/oee , video ctv2248c, frames ctv9306 food 44608p. at the TV hush lok supply all the voltage jump , the LED on the face flickers in time with him, but if you close the conclusions of optocouplers (not from the hot side ), then the PSU enters the all naprugi output in normal and normal on in the operating mode. tell my people know what this could be the reason . optocouplers changed .
First, find out where ganch sits in the primary or in secondary housing .
Raise thyristor , or loaded on a light bulb 25 -40W. See how behaves PI .
In general, this topic is beaten , poroysya in the search.
By the way check quartz 3,58 (NTSC).
Try to put optocouplers with a lower CTR
about pisishki opornik teelpeshka or es eshka , or harness .
Are you talking about? Explain please, or we villagers do not understand .
The TV hush lok supply all the voltage jump
check food (st92195c7b1/oee), if it walks in the range 0 -3v, then I percent.
if there is a stable 5v , then check an external stabilization
check quartz 3,58 (NTSC).
And you have all these tips to repair BP ? ?
You optocouplers ( LED in it ), that is in control? See his administration.
pisishka - optocoupler
opornik - The voltage for adjustment
teelpeshka - it is aenka , steering errors , crap tripod 431 ,
es eshka - previously used SE110- 145 .
I finally can , it is also from the village , as all this is explained by the scientific tried obyasnt . Got it?
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]= the output of two ms44608 Install a filter capacitor 100 peak
| A Conder in secondary housing have not tried to watch ? |
Conder has changed in the secondary housing , tl431, but interestingly enough I was shooting instrumentman and when soldered back tsykane stopped. I have since D802 BA159 voltage jumps on the oscilloscope looked too impulses kakieto swaps , and telecom out of the duty room with a 3- 4th attempt and C829 4700,0 pulses are present can it be so ?
What are the impulses at the S829 ? Expressed himself more precisely.
You thyristor raised ?
recess is present on s827 which by 5voltam IC802
Why thyristor up (and which)
What do you mean what ---- D889.
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة] Changed to that fig Conder , often buggy .
And to know why raise the thyristor then go down to the search, it 's all there.
You PSU on a bulb sinkers ? ?
control processor ST92195C3B1/0E0
Video Processor STV2248H replaced STV2248C
memory 24S08W6
TV is almost new , burned diode D605 - BY228 replaced by an identical and D606 - UF5407 replaced by HER308.
I suspect that the configuration menu is not suitable for STV2248C.
Tell my how to enter the menu and change the options for adjusting the horizontal, vertical, and a pillow with the two sides .
"Menu " , 4. 7, 2, 5. Then it seems the red button. and everything is clear.
In the menu came . The problem of such interpretation can be seen the parameters options and last letters of their names. The top ends in SD. Assuming from it which lines to change ?
Try the green button in servise.Dlya ak 36 rolls .
Green Button has helped, and then that's what. Vertical adjustable, horizontal as bonded and parabola is not regulated . Found the scheme . What does the STV9306, can she covered ? Read the literature no .
Well, if there is no way out of , you can probably just too lazy to use search engines .
There were a pre-sale repairs once two TVs are not out of the store , but from another service center . They did not repair , so as not waited for spare parts from the factory . Flaw - do not have all functions. We opened both the TV. proved faulty D- 605 BY 228 and Q601 BU-2508AF. The reason for the breakdown was a defective throttle L603 1mH in the chain of EW in both cases. Crash ferrite , and therefore sozhenny winding the throttle on both TVs. The original reactor was replaced by a homemade , wind it on the same frame of ferrite 2000.
Two sections of 78 turns of wire 0.33 to one side and two sections of 78 turns in the opposite direction. The ends of the windings soldered in parallel, as in the original. Now , both the TV work , but the image on the TV screen size has increased , so that the letters menu beyond the edge of the screen. The image has barrel distortion - the image pitcher . Field-effect transistor Q602 BUK444 defective . Have increased nominal capacity of S627 with 0,47 mkF to 1,47 mkF - the size of the image came back to normal , but barrel distortion survived . Adjustable via service menu did not help . Who knows what 's wrong? Please answer a little more , without shortcuts.
check reistor 2.7Om in the chain of BUK- 444.pri defect L603 podgaraet.a new L603 turned 1mH.
than can be replaced BY228
Replacing BY228 BY328 fit 1000 ... 1500v, 3A
In what place there is a resistor to 2.7 ohms ? ? If , on short to short container S648 3.3 uF at 160 volts, then the image on the 2-3 per cent increase in size uniformly in all directions. Parameters of the throttle is not measured , but the installation is consistent with the same second throttle absolutely no effect on the image.
We tried to parallel the same reactor set - also no change of the image.
what are you worth of short circuit in the OC. I wrote about a chain of E / W.rezistor 2.7 ohms in the circuit between the diode modulator and BUK- 444.
if the radiator BUK- 444 cold it does not receive signals. I have to work now, 11AK19-8A , and also the problem with the coil . Check the inductance- slip off a lot of questions . I have a new 1.000mH. what parallel / series another does not change suggests about its unsuitability .
When it comes to resistor R612 in series with the chain L- 600 15mH and runoff Q- 602
BUK- 444, then we are in the denominations of the plant is not on the scheme - for example, R612 for 33 ohms , and resistor R689 which vmezhdu drain and gate at the Q- 602 - instead of 10 ohms is at 5.1 ohms. labeling . Most likely choke L- 603 1mH all still must have accurate winding data . But, at the plant it now
stock no .
The same problem , rewind L603 size bolshoy.Esche can add something that voltage from the
diode modulator is underestimated and because of this chain of E / W not working pravilno.Vse thought too about the throttle. Who will have the opportunity to throw the other , write to reassure ( soul )!!!!
And initially the distance between the ferrite was about 1mm .
Throttle changed at TSR 1-1 ,
this izvraschalsya.I not to be confused 11AK19 and 37, they are different.
The original reactor was replaced by a homemade , wind it on the same frame of ferrite 2000.
Two sections of 78 turns of wire 0.33 to one side and two sections of 78 turns in the opposite direction . The ends of the windings soldered in parallel, as in the original . |
Can the magnetic field of 2 windings vichitivayutsya ? Already prompted by becoming TSR - 1. [ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]
TSR in the chain IS NOT WORKING ...... THERE NEED ONLY RIGHT AND YET PODKINESH RELIABLE OR A similar scheme will go to the FOREST ON ONLY TRY 90RF4 C MS3
Cause of the defect was found in a makeshift drossele.Prichinu so - have karskas from the old throttle and wire wrapped so what was at hand ( 0.33mm ) in one side of two sections of 75 turns in the opposite direction , too, two sections of 75 turns and soldered them in parallel . Vytkiv had to wind the wound was less than at the factory ( from 78 turns ) otherwise would not go . According to the theory of the exact number of turns on Q drossseley affects slightly - much more important than what is used in the manufacture of ferrite choke .
Therefore, carefully collected all the remnants of the native ferrite and glued them as superglue = =.
They put the throttle on the board and to handle a service menu barrel distortion .
Now television is on the run - but there is one but
whether in working condition bask ferrite drossselya ? ? By the way sink instrumentman heated too - hand suffers 10-15 seconds . This is after 20 minutes run . Maybe these ferrite chokes torn from heat ? ? In any case, the perimeter of ferrite wrapped it in 4 layers of duct tape .
Everything.
Adding to the previous one. Corporate throttle at 1 mH to get hard - they are long gone , even in stock plant. Therefore the yield is only one rewind choke on the same frame as described above 0.3-0.33 mm single wire winding on two sections in one direction for 72-78 turns and winding back the other two sections of 72-78 revolutions sealed their paraller . Then all the pieces of ferrite carefully glue superglue = = so that the glue would have dried up . Next, if there are some small chips of ferrite and difficult to put in place then , after bonding the ferrite around the perimeter of frame must pull him with a material that is not afraid of overheating and rupture of the high temperature . In this case, the new home-made throttle does not burst from the heat . And the TV will work fine . Possible small distortion of the raster in the corners of the screen . Visible only when you connect the generator test signals.
Interesting all the tips than replace the throttle of the domestic corporate counterparts ? ? Here are tips to try to change our corporate throttle throttle
DRT -1 -1 wound on the same block of line scan MS-3 from our TV 3 USTST . We tried not come. The effect is the same if the reel homemade throttle at the same frame but with a ferrite with pronitsemostyu 2000NM . Throttle is not included in the saturation and it and the radiator instrumentman remain cold. The TV can operate for days but the " barrel " better " pitcher " remains, as it does not regulate the service menu.
P.S.
In the forums there is a new board than to replace the corporate choke - choke supply DC -1
from UPIMTST leaving 1 / 3 revolutions . Who will test result please ! |
Hello . Once again, the replacement of corporate choke L- 603 1mH in chains EW large -diagonal TVs VESTEL and clones . We found the most simple reshenie.Pokupaem exactly the same frame with 4 sections and W shaped core 2000hm, consisting of 2 halves of a letter S. Then pulls the two sections of 75-78 turns of wire 0.3-0.33 mm in the direction of clockwise ends the first winding of two sections Seal to pin on a frame , then shakes his second of the two winding sections of 75-78 coils of the same wire in the opposite direction and the ends of the second winding Seal to the same two pins. The ends of the ferrite is not glued together yet. Then instead of the capacitor in the circuit S627 PL- 601 0.47 mkF x 400v ( on the scheme is marked as 0.82mkF x 400v) solder in circuit board capacity to 1.5-2mkF x 400v. Installing a larger capacity in the new home-made throttle reduces the size of the image. Next. Begins to decrease ( select ) constant throttle podkladyvaya between the ends of W -shaped iron plate from the PCB . Some within the total thickness of 1-1.5 mm with both storon.Posle what we see that the " barrel " is adjusted by remote control through the service menu. Then glue the choke.
Or wraps around the perimeter of duct tape which tolerates heat . Throttle set at cost.
Homemade throttle compared to the brand is heated much less than about 40 g Ts
Radiator instrumentman also runs cooler . Picture
on the screen when applying the test signals on the " good " . The windings on the throttle swung in bulk in your hand .
Then fine tune the accelerating voltage G-2 Flyback transformer on the smaller side (turn at 10-15 degrees counterclockwise) .
موضوع: أعطال وصيانة تليفزيون-Repair-TV-JVC 