HOT - BU808DF Enrolled in repairing TV Vestel VR2106TF. Chassis 11AK30A11. The defect of this - in stand-by mode BP quietly ' yelps, and the operating mode everything is normal. At the autopsy it was found that the filter capacitor C -827 4700mkf x 16 volt outlet BP vspuchen and it unstable voltage 22-24 volts. When the TV set in working mode it stable nine volts.

And the TV is working properly. They tried to replace the C- 827 to a new tank 4700 microfarads at 25 volts - the effect is the same, only now unstable voltage on C -827 from 30 to 33 volts. And in operation again everything is normal stable 9 volt. While others stress how?

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Verify the OS - and its optocouplers stud. Show do not forget to put a Q804 and D801 near optocouplers, already two cases for this month The repairs came from a broken back for repairs came from a broken back BU808DFI in high parts. After replacing the earned but the food at 135 instead of 115V?. BP collected at 44608r40.

Des Lombards litas in the primary and optocouplers but without results. He left in the duty room nanoparticles, uprom again croaked BU808DFI in the duty room, when it replaced again 10.2v, listened to him, but he barely audible hush ( in the duty room ), and the collector napruga changes 10.2 - 10.4.

Working day and night can work. Vnaydenoy in nete scheme B + = 150V - perhaps it should be for a 51 pipe? Javascript: emoticon (' [ندعوك أو لمعاينة هذه الصورة]' ) who face, tell me, pliz. Thank you in advance. Check, and better replaced right away cond 10mkf in the basic chain BU808. The transistor die only in the duty room and not immediately, but since it does not work prikopatsya. Also it was like BU808DFI in JVC AVK14T3.

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And Litas everything changes, such as required, and 808 normal set (of the same party and with a normal resistance to b -e - in other TV work ) and heating was weak in the office. And fly, too, only with a long work in Dej.

Never understood what it was. And there is resistance in the collector circuit penultimate stage picking (somewhere found on the boards ). Flew only in Dej. All done on line. It will soon have, probably, bring it.

Only in the night. Even probyval device put on the collector, after 3 hours, when I came kurnut - dead skunk. I could not tolerate 5 min. And also in the night.

In the duty room heated? Hush pitalka in the case when dry Konda of B + or a small container S817 ( necessary to select manually for each apparatus individually). In the duty room transistor must not die - the only reason - spontaneously switched briefly to the operation mode from power surges - the reason, I think, be found in the piping SCR MCR22 - very often, this scheme becomes unstable. Check the resistor R817, and better to replace it and see S857 - 100p SMD performance, the second leg 44608. Often missing - need to install.

Well, then switch off S646. The pulses must be at 48pin! [ندعوك أو لمعاينة هذه الصورة] the launch equipment (PPE) should be checked on an oscilloscope conclusions STV2248 with the power off with the withdrawal of three TR601. Togda and licks neispravnosti become obvious reasons. You wrote that ' 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: scheme would take from here: [ندعوك أو لمعاينة هذا الرابط] 1. Current, respectively, grew out of a poorly propayanoy S621, which subsequently propayal (and later substituted ).

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 ). 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. [ندعوك أو لمعاينة هذه الصورة]. [ندعوك أو 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 أو 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 ). 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.