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BRIDGEND & DISTRICT AMATEUR RADIO CLUB
 GW4LNP/GC4LNP
 

Home Up What's New Index of Web Site Radio Rig Mods Radio Rallies Ham Radio Hobby CW Facts DX Calendar Search Page Earth Project Club Members Welsh Links Radio Links 1 Radio Links 2 What's New TV Sky  Codes Sky  Codes 2 Sky+ AV Amp TV DataBase

 

 
TV Repair Database


 

ITT Euro Mono 2 dead apart from faint squeak 5T10 lop tr  S2000A leaky; 5C38 10nf - 33nf dry joint (depends on model)
ITT Euro Stereo2 S2000AF line o/p tr int goes s/c; line dr tr goes o/c line driver tfmr
ITT EuroMono Blank raster with flyback lines. No 185v to CRT base , 5R56 ( 4.7R  saftet )  o/c.
ITT EuroMono Int picture floods red with flyback lines. IC1002  ( TEA5101A )  on CRT base.
ITT EuroMono No colour. 13IC04 ( Tvp02066 Em0302 )  Pt No.3779-12-24 )
ITT Euromono 2 Lack of height from cold 6C10 220µ 35v
ITT FT110 Colour - phasing varing. C818.
ITT FX5532 Euromono Lack of height from cold  ( about 1 inch )  ,  clearing 6C10  ( 220UF ,  35V )  in the flyback boost voltage generator network associated with the TDA8170 field output chip 6IC02.
ITT FX6320 CORE 2 Dead D502  ( BY448 )  by LOPT
ITT FX6332 DEAD ,  EHT STARTS TO RISE BUT STOPS AFTER SECS OC44   ( 1000mfd  16v )  IN POWER SUPPLY
ITT Ideal color 3332GR Won't start, going to stby. Change polyester cap C709 connected between B-E of horizontal output Tr. Shorts hor. drive to ground
ITT Ideal color 3332GR Won't start, going to stby. Change polyester cap C709 connected between B-E of horizontal output Tr. Shorts hor. drive to ground
ITT LATE SLIM Slimline WONT ALWAYS START  ,  COMES ON WHEN WARM CHECK 4.7mfd 400v POWER
ITT Mini St/by only 1A fuse Si651 o/c, T713 chopper tr BU508A s/c - C701 4µ7 o/c
ITT Mini 2 Colour saturation pulsing when playing tapes Also affected e-e to a lesser extent - TDA3561 decoder chip
ITT Mono B NO PICTURE OR SOUND WHEN SWITCHED ON SET HOWLS  ,  S C722 470uF 16v
ITT Mono B NO S/V - ALL SUPPLIES INC EHT PRESENT NO RESET PUL C722  470mfd ,   16v
ITT Mono B TRIPS WITH MOMENTARY DISPLAY C715  1000mfd
ITT Mono B WON'T COME ON FROM COLD AFTER 3-4 TRIES SET COMES C707 2.2uF
ITT Monoprint A Dead LOPTx u/s - ok on dummy load
ITT Monoprint B Comes on with a screech C901 4µ7 400v & C707 2µ2 63v
ITT Monoprint B Cuts out & int loses chan memory 5v reg IC1405
ITT Monoprint B dead HT at LOP Tr low at 25v; C701 4µ7 400v low cap (HT smoother)
ITT Monoprint B Dead Dry joints pin Q of chopper tfmr
ITT Monoprint B Dead T501 BU508A LOP tr leaky, dry joint C518, C712 47µ 16v hi esr
ITT Monoprint B Dead D733, IC701, R715, R721, D702
ITT Monoprint B Dead - 115v at BU508D collector. Try LOPTX see Tv mag.
ITT Monoprint B Dead - low HT & no EHT LOPTx - scope LOPTr coll - has lots of spikes
ITT Monoprint B Dead - no 115v feed to line stage. C701  ( 4.7u f )  in PSU.
ITT Monoprint B Dead - pri psu ok D733 & C734
ITT Monoprint B Dead - tripped LOPTx or s/c LOP stage
ITT Monoprint B How switch mode PSU works. With ccts.
ITT Monoprint B Int dead Dry joints chopper tfmr
ITT Monoprint B No cold start C722 470µ 16v (8v smoother)- NOTE wrong markings on pcb top
ITT Monoprint B No control via front controls Keypad defective - try cleaning
ITT Monoprint B No sound C304 470µ (pin 5 TDA8196 IC301)
ITT Monoprint B Pic pulling/flickering - OK on Scart C201 4µ7 in tuner hi esr
ITT Monoprint B Sizzling noise followed by thump then Dead. Pin G of chopper Tx dry.
ITT Monoprint B Slow start up C701 & C707
ITT Monoprint B Slow start up from cold. Change C701 , C722  ( 470u f 16v )  , C711 , C707 , R512
ITT Monoprint B Slow startup. C704  ( 47u f )  , C701  ( 4.7u f )  may check Ok.
ITT Monoprint B St/by only HT at chopper Tr - Replace C701 4µ7 400v o/c; BU508A LOP Tr leaky
ITT Monoprint B St/by only C715
ITT Monoprint B St/by only with EHT present C722
ITT Monoprint B Txt inoperative - indicator works DPU2540 chip on txt panel
ITT MP37H No sound via tuner - ok via scart Surf mount Tr VA02 BC847 leaky b-e - pulled down pin 1 of TDA8362 audio de-emphasis
ITT Pico Dead - PSU not operating ZPY120 120v over volts zener leaky
ITT Pico Will not startup - LTB loaded. Disconnect scan coils if sounds better then LOPTX.
ITT Pico 1 Dark pic TDA3561 u/s
ITT PICO 1 PICTURE DARK  (  NOT A1 SUPPLY  ) TDA3561
ITT Pico 1A Dead - with rapid ticking No HT - D658 120v zener leaky
ITT Pico 1A Tuning - will not tune in. R1154  ( 2.2k )  o/c , D1151  ( reads ok )
ITT Pico S Bad hum bar & no sound Replace 4 x 1N4007 mains rects
ITT Pico S Blank raster with line tearing - sound int C524 10µ
ITT Pico S dead 2A fuse on front panel o/c; degauss therm caused it
ITT Pico S Dead. Check small LT transformer for o/c.
ITT Pico S Display shows "88" SAA1292 chip faulty - caused by dry joints esp on C10 1000µ
ITT Pico S Int dead when heated 115v HT still present; dry joints LOP tr
ITT Pico S Misty pic - poor col with red flaring Earthing ring on crt base shorting to cathodes
ITT Pico S No sound R1075 3R3 safety res o/c; C229 220µ s/c
ITT Pico S Pulling/bouncing/int loss of sound C212 10µ 50v in CMR800 (top of can)
ITT Pico S St/by only relay clicks at sw on but no HT to LOP Tr; C701 10µ 350v faulty
ITT Pico S2 Dead - no relay click at switch on. Standby mains transformer primary winding o/c.
ITT Pico S2 Dead - no relay click or display Mains st/by tfmr o/c pri
ITT Pico S3 Dead - life restored if scan coils dis'd Width control coil on scan coils has shorted turns
ITT Pico S3 Dead apart from brief led flicker at sw on LOPTx
ITT SP71D1 Dead with S2000AF lop tr s/c failed aft replacement - CK51 8n7 1.6kv faulty
ITT SP71D1 line driver tr VK22 blows few mins aft sw on CK22 2µ2 100v
ITT ST28TX No sound/blank raster - no R/C & corrupt display reset line to micro IC701 stuck at 4v. CCU SEL06 & MDA2061 leaky from reset pins to chassis. No sound caused by D701 1N4148 in mute line leaky. All caused by dry joints on reg chassis connection
ITT ST3487 No picture. IC401  ( TDA2170 )
ITT ST35767 Dead Field o/p chip had blown
ITT ST38767 Dead TDA2170 field o/p chip s/c
ITT ST38767 Field bounce Dry joints regs
ITT ST38767 No pic - sound ok TPU2732 Txt proc chip
ITT Trimline 122v rail going low after 1/2 hour. Change T617  ( BC238 ) .
ITT Trimline Bars across screen about 1" wide. C1425  ( 2.2uf )  o/c.
ITT Trimline Blank raster. T400  ( BC237 )  or  ( BC171 )  part of beam limiter cct.
ITT Trimline Dead - relay clicks on - mains on board. Black fat MR856  ( or BYT13/600 )   diode by LOPTX.
ITT Trimline Standby - stuck in standby. TR1401 o/c ,  on CMC301.
ITT Trimline Standby - stuck on standby. Standby mains transformer Tr1401 o/c.
ITT Trimline Standby - switching to standby. C1419 leaky on CMC301.
ITT Trimline Tuning - no tuning. No tuning volts , C1072 o/c , T1414 leaky.
ITT TX2713 Frame - line 2 1/3 way down. Drys on frame earth.
ITT TX3126 TRIPS AT SWITCH ON C715 1000uF
ITT TX3325 2-ST2 Blank raster. D402 s/c.
ITT TX3325 2-ST2 Bright raster & flyback lines. Short circuit in CRT.
ITT TX3325 2-ST2 Tripping  ( fast )  at switch on then dead. D702 5v1 zener , R716.
ITT TX3325 2-ST2 White raster - sound ok. Replace D504 , D505 & R514.
ITT TX3326 Mono B No text - green text light always on. DPU2541 IC ON TEXT PCB
ITT TX3426 Comp B Dead - 1 clunk then standby LED fades out. LOPTX D050/37.
ITT TX3426 Comp B No colour. C891 s/c ,  IC800.
ITT TX3437 Comp B Dead - fuse Ok. On/off switch o/c.
ITT TX3446 Blank raster Comp vid present on dig vid board - ok entering VCU2100A vid codec chip but no o/p - chip faulty
ITT TX3446 Dead - Chopper tr s/c & Fu01 shattered C712 10µ 400v
ITT TX3446 Line tearing & int sound mute C209 10µ & C231 0µ47 in tuner
ITT VC200 Dead. LOPTX
ITT VC301 Sync - no sync - noisy volume , eht arced R100  ( 1MR  )  o/c.


 


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MEMO
 
Note the Data Held on the Repair Database  should only be used by a qualified technician. 
 The information is Free,  I will not reply to E-mails or messages 
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Contact Web Master of this site Mike Smith swmas02@msn.com see memo above
 



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