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I'm very happy that you all are performing an incredible good job. Furthermore what you did is very useful for all people as me that have electronics as an hobby.Thank you!!!!!
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Manual found fast and good quality, very helpfull service
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8-17-12 Been using the sight for about 6 months. Fast Downloads and top quality
Manuels !
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Everything was great, the manual, the response time, the simplicity of the order, and the
Price. The only thing that I could possible say on a negative note would be that the manual I ordered was more for a service tech. There were a lot of schematic diagrams that didn't help me solve the problem. However I would order again and recommend the web sight to others.
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I'd been looking for this manual for awhile. Exactly what I needed - and at an excellant price. Thanks!
1-3 All output voltages on the power board is 0V or deviated.
Trouble shooting chart
All output voltages on the power board is 0V or deviated Yes
Check whether F1 is blown
Yes Replace F1
No
Check
whether
No
Replace C1&C2 if D1, D2, D3, D4 are normal.
there is 300V on C1
Yes
Check whether 100KHz oscillating signal on Pin6 of U1
No
Check/ replace U1. U1(PIN 3 - RC waveform) U1(PIN 8 - Drain waveform)
Yes
Check if +5V, , +12V and -12V are short.
No Check whether U1 are eroded.
Yes Check whether the components in the short-circuit voltage are defected or eroded.
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