Hi there.
A quick one - BENQ projector SMPS, according to the SM there should be 2.5V, 5V and 12V at any time ( good ol' times, when there were no eco regulations ).
What I see though, is - +2.7V, +4.8V and -9.9V (I guess the polarity is irrelevant ).
So, the projector starts, and shows some functionality, but is not powering up the ballast ( there is power supply, but no command I guess ). Before troubleshooting more the MB ( there was a puffing smd capacitor for which I'll upload some media in the main cap thread ) and the ballast, I'd like to get the Vs within the specs. The 2.5 and 5V seem to be within the limits, but the 12V is low.
What I've done so far is to desolder the c707 and measure it... and it its fine - 707uF ESR 0.01.
What's next?
A quick one - BENQ projector SMPS, according to the SM there should be 2.5V, 5V and 12V at any time ( good ol' times, when there were no eco regulations ).
What I see though, is - +2.7V, +4.8V and -9.9V (I guess the polarity is irrelevant ).
So, the projector starts, and shows some functionality, but is not powering up the ballast ( there is power supply, but no command I guess ). Before troubleshooting more the MB ( there was a puffing smd capacitor for which I'll upload some media in the main cap thread ) and the ballast, I'd like to get the Vs within the specs. The 2.5 and 5V seem to be within the limits, but the 12V is low.
What I've done so far is to desolder the c707 and measure it... and it its fine - 707uF ESR 0.01.
What's next?
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