TV-4.DOC

QUESTION NO. P1217-8: Sony kv27ts27 TV has distorted sound. I replaced the audio output ic tda2009a but the sound is still bad. I soldered every suspected solder in the audio board.

Replace the SBX module (caps leak onto board) for example only----SBX1638-11, they make several different units so take the number off your module. Tritronics, Electronix, Andrews Electronics all carry it.

QUESTION NO. P1218-5: Fisher PC-320C TV chassis A7F-320C0. I need help localizing IC manufactured by Toshiba P/N 43206205A Other markings in the IC TMP47C4DPSC and QC0568. From Toshiba dealer is "IC not longer under production".

I found part numbers for two IC's for the Fisher TV PC320 (should be the same as the PC320C). IC 201 46-13727-3, and IC 101 46-13379-3, Sears part numbers Division 57, Source 528.

QUESTION NO. P1213-10: RCA ctc 177be TV is dead. I changed the regulator and hor output. I need the procedure to program the TV and new eeprom.

Go to http//repairfaq.physik.tu-berlin.de/sam/rcatune.htm under eeprom section. Very good information on your problem.

QUESTION NO. P1129-9: Panasonic Ct27sf12t TV Chassis AEDP248 can be turned on and off, the blanking bar (black bar about 2" thick across the screen) will be somewhere in the picture, not rolling or moving at all. If turned off and on 10 to 15 times, it will be out of the picture, locked in where it should be.

home.mindspring.com/~wa6ati/pan-new.htm

QUESTION NO. P126-8: Magnavox 25TR12 C221 TV has lost horizontal hold.

C432=100UF,200v replace with 250v. Also solder horizontal and power supply components that have aged solder.

QUESTION NO. P1114-10: JVC av29sx2ek TV, how do I get into service mode?

members.accessus.net/~090/awh/how2adj.html#5.11

QUESTION NO. P1116-6: Emerson tc 1994 TV. Need value and wv of c 453.

C453=1UF, 160v replace with 200v or 250v also replace C408=33UF, 250v (located in power supply used to filter the 5v standby) and also C443=10UF,250v (located between flyback & heatsink).

QUESTION NO. P111-10: Daewoo DTQ-25S2FVC TV with Q 804 (E13009-2) in power supply shorted. What is this transistor and is there a sub for it?

E 13009 is a NPN bipolar transistor often used in SMPS for PCs. You can replace with 2SC4161, for example.

QUESTION NO. P1029-5: Magnasonic ELT-5205 TV Chassis C-231B the yoke is burn , what is the part number?

Most of the 20" Daewoo chassis use the generic Daewoo # ODY-M2002 (white plug) which has several equivalents. Daewoo OEM # 58D100026 or DSE-1922FL. There should be a white sticker on the yoke assembly itself which would confirm the above info and can be purchased from many electronic supply stores.

QUESTION NO. P1029-10: Sanyo AVM-2752 TV works until turned off for a few minutes. Sometimes the set will come back on, other times it will not come on at all until the cord is unplugged for a few seconds and then plugged back in. If it does come back one before unplugging, sometimes it has lost channels and some new features in the menus appear even though they are not supported by this set (ie. surround sound). Unplugging the set always seems to reset it.

Check Q052=ECG382 and D509=18V zener.

QUESTION NO. P1019-4: Quasar vv1307 TV/VCR (Panasonic pvm 1327 chassis) relay clicks, hv shuts back down. I jumped the relay, everything works except audio and the tuner. All voltages read ok.

LA7837 Vert IC and R414 2.2ohm .5w.

QUESTION NO. P1024-7: Philips Magnavox MX3291B101 TV chassis 32D700 is dead with the exception of motorboating sound from speakers and relay clicking on and off. All Power supplies are normal, no high voltage or Horiz. drive.

There are many possibilities so I find it easier to post the site home.mindspring.com/~wa6ati/D7-DOC.pdf.

QUESTION NO. P116-2: RCA F32645 TV chassis CTC203CX. The audio amp is good as I can adjust the volume of the static, but there is no program sound. All externals seem to be correctly set.

This website has info on audio problems: home.mindspring.com/~wa6ati/CTC203.htm.

QUESTION NO. P118-8: Sanyo DS25330 TV. I need values/crosses for R009, R008, R004, IC001, C007, R007, R021, R022, C021, C001, and R310.

I can only help you with the following:
R008=220 ohm,10W (wire wound), Sanyo # 402 060 4606
R009=220 ohm,10W (wire wound), Sanyo # 402 060 4606
R004=5.6 ohm,2W
IC001=STR30130
R473=6.8 ohm,8W (wire wound), Sanyo # 402 067 8201

QUESTION NO. P1120-10: Zenith SS6589W TV chassis #9-825-1 is missing 2 inches off bottom of screen. Everything checks out fine.

Check CX2111 for open and RX2126 if available in your model.

QUESTION NO. P1031-9: Panasonic ctn1956r TV chassis andp 201. I need the part number for the microprocessor IC which is missing.

Microprocessor Panasonic# MN15151Q14R=$16. Note this micro is also used in several other Panasonic Models one which is a 20" Panasonic stereo tv model CTM-209S, Chassis ALEDP203, Jan 95, pcb location IC001.

QUESTION NO. P1119-3: Toshiba CF-2647 TV, works fine, but it clicked (arced) extensively on startup several times and now the startup clicking stopped, but the flyback connection to the CRT tube back exhibits arcing. The flyback solder joints look good, and the fact that the TV still works leaves me stumped.

In a similar model 27" Toshiba stereo tv model CX29679, chassis TAC-8949,year Sept 89 the unit initially exhibited the same symptoms but eventually it would not come on and only single relay click was heard. Power supply C863=4.7UF,50V (red/brown colored Elna brand) was the culprit and I decided to replace C301 & C305=2.2UF,50V (red/brown colored Elna brand) vertical filter caps which usually go bad with time. One is located near tv color proccessor and the other near IC301=vert o/p ic. In another similar model 27" Toshiba stereo tv model CX2828C, Chassis8815, year Nov 88 the culprit turned out to be C822=100UF,16v located in power supply at pin 1 of Q802=STR-D1005(sub power reg). I also replaced C301 & C305 in this unit.

QUESTION NO. P1029-3: Toshiba CA 14159 TV (equivalent to CA14119), the bottom half of picture is black (looks to be related to a vertical problem) and top screen image is squeezed; sound is OK.

Replace two red/brown colored Elna brand of caps in some models pcb locations C301 & C305=usually 1UF or 2.2UF at 50v. One is located near the tv color processor the other near IC301=vert o/p ic.

QUESTION NO. P1024-10: Magnavox 27tsc6 2102 TV chassis 27b511-00aa, it seem like horizontal frequency is out of whack. Replaced IC-jungle,LA7674 and voltage regulator IC, STK 730-020 with no help.

Replace C432=100UF,200v upgrade it to 250v. Also resolder power supply & horizontal section components that show sign of aged solder.

QUESTION NO. P1116-10: RCA ctc177BE TV is dead, fuse ok. horiz. out (d1885) seems ok.

Solder tuner & micro grounds then replace U3201=EEPROM RCA# 218398.

QUESTION NO. P1029-4: Magnavox TV, Chassis # 19Y400 has no audio or video and the voltages looked OK. I replaced the tuner and still have the same problem.

Replace Z463=483513037121,check R360 & R361=483511657275.

QUESTION NO. P1023-4: What is the service code to enter '' service mode '' on Phillips and Panasonic televisions?

http//www.calanan.com/panasonic/.

Electronic Servicing & Technology Magazine issue June 1998 page 24-39.To order back issues for about $4 each, call 1-800-853-9797. Philips tv - to enter service menu use the remote control and enter the following seven-button sequence 0,6,2,5,9,6,menu. Depressing the power button will exist the service mode and save the current changes. It will also turn the unit off. Panasonic tv- while the tv is on and operating, momentarily short TP-8 to ground(FA-1 to FA-2 on the A-Board).A yellow on screen "CHK" will appear in the upper right of the screen. (This is the "aging mode.").Press the ACTION button and VOLUME UP button on the front panel at the same time. The yellow "CHK" will turn red. You are now in the service mode. Use the POWER button on the remote control to select one of five service ajustmentsB, sub-adjustments; C, CRT adjustments, D, pincushion adjustments; S factory adjustments only; NORMAL TV, normal operation of channel and volume buttons. The adjustments will appear in the lower right corner of the screen. Channel buttons on the remote control let you select the feature, and volume buttons let you change the registe value. To exit service mode, press ACTION and POWER buttons at the same time for about two seconds. The tv will momentarily turn off and come back on tuned to channel 3.

QUESTION NO. P117-6: Sony kv25xbr TV has poor sound, control audio, image are good, no noises audio.

If unit has US Sony sound mplx decoder HIC (MTS) module, replace any with any of the following part #'s GenericSBX1637-11, SBX1637A-01/02, SBX1638A-01A, Sony#8-746-371-10/11/20, Hitachi#1381181, RCA#SKUP9102,201632, Zenith#905-2321, Goldstar#OIS0163702A, Sears Canada# 575251381181. Another solution is to discard tiny Sony sound module from board and replace with 2 caps (4.7UF,50v), pin 12 put + of each, and pin 10,pin 11 for -.

QUESTION NO. P116-1: RCA F26051EMFE1 TV, there are white horizontal lines showing on screen.

Re-adjust the brightness (G2)control adjustment on the flyback transformer by turning it counter clockwise.

QUESTION NO. P1019-5: Sanyo DS27780 TV Chassis 27780-01 has no sound out of speakers or audio output jacks. Audio Amp IC001 is fine. Used audio signal tracer and found sound going into daughter sound card, display shows volume level and speakers are not muted.

Found bad IC3601 CXA1279AS.

QUESTION NO. P1119-2: Zenith SL7784BT TV has a very dim picture. The CRT filament voltage is only reading 1.8 volts. How do I adjust the drives and screens? There are no controls on the G-2 board or any where else.

Picture is defective a common problem with about 80% of all Zenith crts. Call LG Electronics (Goldstar,Zenith) at 1-800-243-0000 and speak to a Zenith tv tech. Some Zenith tv's have 3 and some have 4 year warranty on the picture tube.

QUESTION NO. P1120-3: Sony TV KV 27TS30 has reduced HV but is not adjustable in this model.

www.videotech.org/sony.htm

QUESTION NO. P1121-6: Sony KV-27S25 TV, can hear high power kick on and immediately off. There is a constant one second blinking standby light. The troubleshooting guide points me in the direction of the Y/C Jungle IC301. There is a PIP model so I was wondering if this is the reason the motherboard says a Y/C/J ckt. If so, is IC351 the Jungle ckt because I cannot find an IC301? Reflowed the tuner to no avail.

www.videotech.org/sony.htm

QUESTION NO. P1120-2: Hitachi 31CX4BC TV chassis A3LXU has the vertical jitters when cold and sometimes will flat line.

Check soldering at vertical output IC & heatsink. If ok, replace all vertical electrolytic capacitors in that have the same prefix designation as the IC. Along with the IC also check vcc supply diode connected to IC and the fusible resistor leading back to flyback x-fmr.

QUESTION NO. P1121-3: RCA Proscan PS27121 TV Chassis CTC169CD is missing 2 l ines from top and bottom of screen. Replaced Q505,Q506. Picture did not change.

Resolder tuner & micro grounds, then copy EEPROM parameters down then replace EEPROM=RCA# 209955.

QUESTION NO. P1121-2: GE 13GP240 TV Chassis TX825TB. Replaced TP15,DP02,TP11,TR03, the set still does not start up. Could I still have a bad transistor?

Replace CP15=12UF,63V (black Panasonic) electrolytic capacitor it is the 8.5 supply filter coming from LP04=flyback x-fmr,located at corner of heatsink.

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