Quote:
Originally Posted by starbond
Well i have some good news to share for once.
After getting my replacement Q4, the unit DOES power on now, although not fully.
When I flip the dim bulb switch the lightbulb lights for a second as the transformer starts and the vcr head whirs up for a moment, then the bulb goes out.
Once I press the power button the VCR then the bulb glows dimly the entire time the vcr is on. all of the front panel functions work excepct for part of the main screen VFD, the clock and time elements light but the orange PLAY FF RWD side does not. The whole thing runs weakly, I can put a tape in the transport and it will lower onto the spools and I can eject it, but Im guessing due to the bulb pulling current the unit is running not at full power.
I'm afraid to run the VCR without the bulb intermediary as I dont want to blow Q4 AGAIN. Given that the bulb glows constantly (but dimly) while the unit is on, is there any fresh ideas about where to look next or measure?
If I put the DMM to the DC side of the rectifier I read 54VDC coming out, which I don't know if that's high or acceptable.
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Usually if the dimbulb glows dimly when something is powered on it means the item in question is working properly, if it glows bright and stays glowing bright then that means it still has a short in it.