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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: 14
B & O
LX
2800
Blank raster & no sound - OSD OK
C18 on decoder board dry joint
14-09-04
B & O
LX
2800
37XX
Sync - poor sync.
26IC5 ( TDA1940 )
14-09-04
Grundig
CUC
2800
Arcing from LOPTx former to adjacent components
Tripler faulty
14-09-04
Grundig
CUC
2800
Dead - psu working ok
Relay contacts
14-09-04
Grundig
CUC
2800
No sound
Check TDA6200 sound proc & U2829B sound dem chip
14-09-04
Grundig
CUC
2800
Sound from one chan only & no brill adj
Micro SDA2011-A005 faulty
14-09-04
Grundig
CUC
2800
Sound low & dist
U2829B IC sound chip
14-09-04
Grundig
CUC
2800
The tripler had failed. After replacing it the set
Microcontroller chip type SDA2011 -AOO5 . Make sure that you get the right one for the set.
14-09-04
Proline
2800
FIELD COLLAPSE
CHECK OP. IC uPC1498H
14-09-04
Proline
2800
- 3200
VERY LOW HEIGHT - 4 " .
CHECK -20v LINE ( PIN 8 - LOPT , R 456 etc. )
14-09-04
Proline
TN
2800
flyback lines on the top
C428 100uF 35V next to frame IC
14-09-04
Proline
TN
2800
Lines at top of screen
Flyback boost cap C432 100µ 35v
14-09-04
Proline
TN
2800
no sound when cold, then distorted, then Ok after 6-7 min
replace IC701 LA7955 situated on the AV PCB
14-09-04
Proline
TN
2800
not memorising channels
check for -28V on pin 28 and +5V on pin 8 of IC106, if these are correct, replace IC101 OEC8032B and IC102 MN1220
14-09-04
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Last SM download : RCA RCA WV-98C Senior VoltOhmyst VTVM manual 1964
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