Schematics 4 Free
Service manuals, schematics, documentation, programs, electronics, hobby ....
◦
register
◦
send pass
S
earch
B
rowse
U
pload
W
anted
D
atasheets
C
hassis2model
R
epair tips
F
ulltext search
C
ables & Connectors
R
epair tips
Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
Make
Model
Problem
Solution
Date
Found: 50
Bush
BTV
170
T
No TV sound - Pback sound ok also no Txt
Change data in NVM - address 0D to B3 for sound; address 08 = 44, 09 = 61 for txt
14-09-04
Bush
BTV
170
T
No Txt
Reqs reprog - Bush will FAX sheet thro'
14-09-04
Decca
170
Blowing Q403 S2000AF.
C421 o/c ( value depends on CRT size.
14-09-04
Decca
170
dead
chopper tr Q801 S2000AF s/c. Replace C807 100µ, C812 100µ. NOTE:- if run on reduced mains (120vac) set will trip even tho not faulty
14-09-04
Decca
170
Dead aft storm
Replace IR02 PCD8572 & I001 SAB3035
14-09-04
Decca
170
FAULTY AFTER ELECTRICAL STORM
REPLACE IR02 ( PCD8572 ) , AND I001 ( SAB3035 )
14-09-04
Decca
170
Green tint to picture.
R212 ( 47k ) high.
14-09-04
Decca
170
Int frame collapse - destroys TDA3651.
C306 ( 100uf 50v ) o/c.
14-09-04
Decca
170
INT SYNC BRIGHTNESS
DRYS ON TEXT PANEL OR POOR CONNECTIONS ON CHASSIS RIVETS + EARTHS
14-09-04
Decca
170
Intermittent sync/brill/sound/tuning etc
Soldered rivets connecting outer chassis to main pcb dry jointed
14-09-04
Decca
170
Loss of col & lines
Bad joints edge conn Txt panel
14-09-04
Decca
170
Low motorboating noise.
C711 ( 100mf 63v ) takes our R802 3.3ohm 4watt surge limiter L/H side of PSU.
14-09-04
Decca
170
No sound or raster - display Ok - no 12v rail
Drys on pins 1&15 of M152 connector ( audio/scart pcb ) must remove.
14-09-04
Decca
170
No sound/led & bright raster fading away
6v supply only 2.2v - D811 BA157 leaky
14-09-04
Decca
170
No sound/vis - has chan display & will change chan - HT present at lop tr
Dry joints on plug pins base of vertical scart panel & on RA16 on separate audio panel.
14-09-04
Decca
170
No start up - chan ind ok
R426/427 1k hi res
14-09-04
Decca
170
NO TUNING FROM COLD , OK WHEN WARM
4Mhz CRYSTAL X001
14-09-04
Decca
170
No tuning when cold
33v ok at pin 17 SAB3035 but no o/p pin 15 - X001 4Mhz Xtal faulty
14-09-04
Decca
170
NON STARTER , CHAN IND LIGHTS , CAN BE SWITCHED TO S
CHECK LINE DRIVER STAGE ESP. R426 AND R427 BOTH 1K ohm
14-09-04
Decca
170
Only possible to select one channel.
Front panel membrane , or IC702 ( CITAC )
14-09-04
Decca
170
Pale picture - lack of contrast - control u/s
L506 o/c.
14-09-04
Decca
170
Sound - none LED 1/2 inch bright band at top.
D811 ( BA157 ) high forward resistance , R820 ( 0.22R )
14-09-04
Decca
170
Switching on from standby.
IC702 or Front panel control membrane.
14-09-04
Decca
170
/180
Dist col - yellow faces - int
C531 1µ 50v in apc loop
14-09-04
Decca
170
/180
Line o/p tr s/c
Also replace D404 BY228 E-W mod diode, Q303 (TIP31 ok) & R433 1R2 safety res
14-09-04
Decca
170
/80
INT YELLOW FACES AFTER 2hrs
C531 1uF 50v DECODER
14-09-04
Goldstar
CIT2
170
Fails to power up from StBy
D/J on main relay : remove retin & replace
14-09-04
Goldstar
CIT2
170
F
No start up or int sw off
Check for dry joints on main relay
14-09-04
Goldstar
CIT2
170
F
Patterning from cold
C827 1000µ 25v leaky
14-09-04
Goldstar
CIT2
170
F
Patterning horiz lines on pic
C827 1000µ 25v - tested ok on esr meter
14-09-04
page:
1
2
FB
-
Links
-
Info / Contacts
-
Forum
-
Last SM download : Samsung S200
script execution: 0.04 s