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: 917
Sony
BE1
Dead HT 110v present at test point
No B+ volts at loptr - PS01 N15 600mA cct prot o/c
14-09-04
Sony
BE1
DEAD NO HT BU506 SC
CHECK R606 68R OR REPLACEMENTS
14-09-04
Sony
BE1
DEAD ONLY 25v ON D604 ( 119v IS COECT )
C608 680pF LEAKY CONNECTS ACROSS D604
14-09-04
Sony
BE1
Dead.
BU506 , D611 , R606 ( 68R )
14-09-04
Sony
BE1
E/W & Width problems
C808 47nf 250v
14-09-04
Sony
BE1
Field collapse
Check R801 ( 0.47R ) & PS501 if both o/c IC501 ( uPC1488 ) u/s if ok check for D/J around ic
14-09-04
Sony
BE1
Field collapse
Replace fop chip with a µPC1488H (orig LA7830) & check cct prot
14-09-04
Sony
BE1
Field collapse
IC501 µPC1488H faulty - supply from LOPTx high - dry joint on loptx esp pin 11 (chassis)
14-09-04
Sony
BE1
Hooking at top of pic with buzzing from lop stage
line dr pulse at pin 8 of TDA2579A IC551 affected when fault present - chip faulty
14-09-04
Sony
BE1
Int goes to lines / loss of sound
Dry joints T01 & T02 in IF can
14-09-04
Sony
BE1
Int loss of sync
No vid from txt pcb to sync sep pin 5 IC551. 12v supply on txt pcb only 5v due to Q02 o/p (sm) 2SC2873-Y faulty
14-09-04
Sony
BE1
Iont sound & vis - goes black with lines
Dry joints in VIF can
14-09-04
Sony
BE1
Lack of width & E/W dist
L804 2.7mH o/c - couples E/W drive to diode mod
14-09-04
Sony
BE1
LINES OF RED , BLUE , GREEN AT TOP OF SCREEN
IC501 ( FIELD OUTPUT DRY ) u/s R801 ( 1K )
14-09-04
Sony
BE1
LOW WIDTH
L804 O.C.
14-09-04
Sony
BE1
No sync - sometimes intermittent
repair print to collector of Q02 on txt pcb
14-09-04
Sony
BE1
No sync when cold
IC02 SAA5231-V6 vid proc chip faulty
14-09-04
Sony
BE1
pic washed out & flaring
R852 overheating (1K0) & D852 leaky
14-09-04
Sony
BE1
Picture blanks out leaving OSD or pic breaks up
DJ on T01 in if can
14-09-04
Sony
BE1
Replacing STR54041
Use Sankey version - has "SK" in small circle at bottom
14-09-04
Sony
BE1
SET WON'T TUNE IN BUT OSD MOVES COECTLY
IF 33v ON IC004 OK Check Q004 & D156 SC
14-09-04
Sony
BE1
SOUND STUCK AT ZERO OSD MOVES
PIN 7 IC201 TDA1013 AT 6v D201 SC
14-09-04
Sony
BE1
SOUND WONT ADJUST , OSD OPERATING NORMALLY
D201 1SS133 ( ON AF MUTE LINE )
14-09-04
Sony
BE1
St/by only
Micro type M50436-618SP - micro volts were incorrect & no activity
14-09-04
Sony
BE1
Various tuning faults
dry joints in if strip & C012 0µ01 s/c
14-09-04
Sony
BE1
WHITE FLASHES ON PICTURE
Q301 NOISY JC501Q
14-09-04
Sony
BE1
Won't stop/lock when search tuning
Sync gen Tr Q071
14-09-04
Sony
BE1 KVM19TU
Blank raster turning into line collapse
TDA2579A jungle chip was heat sensitive
14-09-04
Sony
BE1 KVM2131
Repeatedly blows LOPTr
dry joints line osc IC551 TDA2579A and possibly C808. Other possibilities dry joints on line driver tx, LOPTx & STR giving an int high o/p
14-09-04
Sony
BE2
dead
IC601 STR54041s/c, Q601 limiter BC637-16 s/c - when replacing make sure its fitted correctly! Check for dry joints esp mains bridge
14-09-04
page:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
FB
-
Links
-
Info / Contacts
-
Forum
-
Last SM download : ALASKA IC-1800
script execution: 0.24 s