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Now downloading free:CHUNTEX ELECTRONIC CO LTD 1769SL


Download CHUNTEX ELECTRONIC CO LTD 1769SL docs - Computer monitors - CRT, TFT, LCD, touch screen, plasma display - service manuals and repair information

File information:
File name:CTX 1769SL.rar
[preview 1769SL] new window
Size:1366 kB
Extension:
MD5:8eecb7be3efdac81171b8ec22db31420
Mfg:

CHUNTEX ELECTRONIC CO LTD

Model:

1769SL

Original Chassis:
Descr:Schematic
Group:Electronics > Computer equipment > Monitors >
Uploaded:2004-06-04 01:51:09
User:eralonso
Multipart:No multipart

Information about the files in archive:
Decompress result:OK
Extracted files:1
File nameText
1769SL schematic.pdfCTX 1569DSE Dead with tripping PSU CTX CPS 1560LR CTX CPS 1560LR . Line output transistor dies soon after switch-on. . Too wide and E/W fault. Line transistor becomes hot. Check IC701 (TL431), R717 (12K) and capacitor C721 (1uf 50V). If the capacitor has blown apart and the resistor burnt, check the line output transformer before replacing any components as in my monitor the transformer had literally melted at one side and a crack surrounded the transformer's middle. Obviously this transformer had developed a EHT to pin 11 short with catastrophic results. Replacement transformers are available but due to the cost it is usually more economical to scrap the monitor. [HV is present for a short while; 250V at collector if it is de-soldered, also when load is applied with a lamp]. Check downward control/PSU, add 200R to the Ub-supply to the line transformer if necessary. Check diodes and drive control transistor(s) in the width control. Overheating of the line transistor may be due to t

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