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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
KVM2131U
No chan store
Dry joint pin 5 IC002 EEPROM
14-09-04
Sony
KVM2141
Lum fades out followed by sound
47k sm res in base of Q005 2SA1037K or 2SA1162-G hi res - caused by leaky 22µ 50v cap nearby - also R816 150k & R817/818 worth checking
14-09-04
Sony
KVM2141
Sound & contrast fade after time
C012 22µ 50v
14-09-04
Sony
KVM2141 BE2A
Screen graphics only - ok feeding another set from scart
digital transistor Q005 type DTA143TK
14-09-04
Sony
KVM2151U
Col flicker on & off
Bad joint LOPTx earth
14-09-04
Sony
KVM2170
Dead
Should be 135v cath D606; 20v at cath D607; 8.5v at cath D608 - no 8.5v as ICP PS603 1A N25 o/c
14-09-04
Sony
KVM2541U
Stuck on 1 chan & no R/C response
2 x resistor packages (4 x 10k) on pluggable tuner/IF/proc board ref RA2 & RA3 - resoldering provided cure
14-09-04
Sony
KVP14U
Dead
PSU shutting down due to excess current in secondary - C608 680pF prot cap breaking down under load
14-09-04
Sony
KVS29SN1 G1
Black screen - no vert scan
Dry joints on VC (v pin out) sub-board Q1801 / Q1802/ Q1803/ IC1803
14-09-04
Sony
KVV1430U
St/by only - trips when sw on
LOP tr S2055N s/c - used BU508DF
14-09-04
Sony
KVX2121U
Sound has int crackle
Bridge rect dry joints
14-09-04
Sony
KVX2132U
Pic fades out & crackle on sound - other tvs in w/s pick up radiation
LOPTx internal arcing
14-09-04
Sony
KVX2152U
No/Poor start
C611 47uf and C614 220uf Caps
14-09-04
Sony
KVX2162 etc
Field o/p faults/led flashing 13 times
After chip replacement, if geometry still not right check serv mode
14-09-04
Sony
KVX2162U
Shuts down aft 5 mins
s/c between heater/cathode of crt when heated - can be measured on meter
14-09-04
Sony
KVX2162U
Sound int
Dry joints Xtal X1101 on Nicam sub panel
14-09-04
Sony
KVX2172
Only selects chan 3 - when other chan selected reverts to chan 3 aft few secs
ST24C16 EAROM corrupted - replace chip and set up
14-09-04
Sony
KVX2172U
Field top foldover
FOP chip
14-09-04
Sony
KVX2172U
Int cuts out
IC72 Sony Part 8759118427.
14-09-04
Sony
KVX2182U
Goes to st/by with rustle of eht & click at sw on
LOPTr - 2SC4927 (S/C B/E) & replaced LOPTx - HR7337 (Primary winding shorted).
14-09-04
Sony
KVX2182U BE3
St/by only
Memory chip IC002 sm on board A pt no 8-759-334-20 is probable cause
14-09-04
Sony
KVX25121U
Stuck on chan 11
fault cleared when front panel removed/replaced - jamming button?
14-09-04
Sony
KVX2512U
FRAME FOLDOVER
REPLACE C531/532 NEAR FRAME O/P IC
14-09-04
Sony
KVX2521
Int bright blank raster, all normal settings at max & no chan store
T807 10mH coil int o/c - must use correct coil SEME order-code TPAR2419 ?5.74
14-09-04
Sony
KVX2521
Red, green, blue lines appear across top of screen after time - worse on txt
C531(680uf / 25v)
14-09-04
Sony
KVX2521U
Field lin - streched top, compressed bottom
C531 680µ low cap
14-09-04
Sony
KVX2521U
High pitched buzz from rh spkr
Dry joints audio o/p chip
14-09-04
Sony
KVX2521U
Int loss of pic & sound
12v supply lost when pcb flexed - Q608 front/centre of pcb dry joints
14-09-04
Sony
KVX2532U
Nicam dropout
Adj orange variable cap on Nicam board
14-09-04
Sony
KVX2552U
Hum bar effect in background - ok on scart
Dry joint on reg near front of pcb over plastic support pillar that needs cutting to gain access
14-09-04
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