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  1. S

    Yamaha RX-V795a Receiver doesnt power on

    'Loose' doesn't sound good. Was the receiver dropped? All the components are in there for a reason. They all do something. I've been surprised a few times by finding more than one fuse in some receivers. You apparently found the one for the power line input. Some receivers have other fuses...
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    Yamaha RX-V795a Receiver doesnt power on

    Make sure the reciever is unplugged if you go poking around in there. The reason to inspect he components is to look for anything obviously damaged. It's not always the case, but sometimes we get lucky and can isolate a problem because we can visually see heat or physical damage to components...
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    Yamaha RX-V795a Receiver doesnt power on

    You said you have a multi-meter. Were you able to check the contacts on that relay you'r wondering about? You have to be careful about line voltages, but you should be able to plug in the relay board (without allowing it to short itself out against anything else), and check to see if you get...
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    Yamaha RX-V795a Receiver doesnt power on

    I just checked my email before leaving town for the weekend. Maybe somebody else here can help you with this(?) I'll be off-line until next week.
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    Yamaha RX-V795a Receiver doesnt power on

    It's hard to give you advice with this problem because we don't have a schematic, and we can't pin-point the exact issue. You're concentrating on a possible bad relay. That may or may not be your problem. The mere fact that you can feel/hear the relay clicking, tells us that whether or not...
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    Moving electronic part/switch/relay - does this exist?

    Yeah. I don't know of anything that small. Theoretically, this sounds basically something like what a solenoid would do.
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    Sony Bravia KDL46XBR9 Power/Standby blinking 10 times

    As far as know, most if not all display monitors are made in China, They are not know for quality control or reliability. This is (as far as I'm concerned) a result of the 'go green' movement. The chemicals required to produce these monitors are hazardous, and western civilization regulations...
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    Guidance for choosing PLC

    Personal safety maybe, but mostly protection of the different circuits in the overall system.
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    Ground lift

    If that's he case, try Googleing 'DC Offset', or 'Voltage Offset'/
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    Sony Bravia KDL46XBR9 Power/Standby blinking 10 times

    I don't know. Is it possible that the unit is 'stuck' in the 'track microprocessors mode'? Maybe because one of the microprocessors has ffailed? There's gotta be SOMEBODY that commercially services your unit that can at least give you an idea of what to do with it.
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    multimeter not working

    You said there was some corrosion on one of the battery contacts even though the battery wasn't leaking. I'm wondering if the meter was stored in an atmosphere that that allowed oxidation of contacts inside the meter. If the display is an LCD, my first guess would be the contacts to the LCD...
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    DC Voltage Regulators

    You're looking for a 'DC to DC Converter', but I'm with Arouse 1973 in that I don't think this is probably the best way to go. I too, am interesting in knowing your circuit; in wanting to trigger a 120VDC relay with 60VDC. There's pobably a better way to go.
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    Sony Bravia KDL46XBR9 Power/Standby blinking 10 times

    Did you ask the *astards what the 10-blink code means?
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    Repairing Triumph Triple 900 Gill ECU/Ignitor - Component identification

    It's tough crossing a lot of the new surface mount devices. Many manufacturers (all different) use their own code for each device, instead of the standard JEDEC industry markings. There are probably others, but the only complete cross-reference I've seen on-line is put out by Philips. And the...
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    Power Supply Capacitors

    Want to add trivia to this thread. A lot of the old power supplies I've worked in tube circuits use the old oil-filled caps. They last longer than anything I've seen. I assume they went to electrolytics for tighter tolerances and ease of incorporating them on printed circuit boards. The...
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    Varistor+Diodes as transient suppressor

    The concerns noted by others (WHY, are the diodes blowing), is a valid concern. Frankly, my guess is they're not rated for the actual voltage spike they're being exposed to when your pumps start. I'm a big believer in using the varistor, but others here tell me that they breakdown over time...
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    Repairing Triumph Triple 900 Gill ECU/Ignitor - Component identification

    I can't see the pictures you posted. The info from your other forum apparently tells you that you can replace surface mount (?) devices with electrically equivalent leaded components. If they're the correct electrically equivalent devices, did that forum give any information concerning the...
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    Unsticking electromechanical relays

    This was a common problem in the 1960's through the early 1980's when these relays were in common usage. I've still got my kits for servicing relays. Burnishers, alignment tools, leaf straighteners. Harald pointed-out causes to be aware of. Servicing these relays is a lost art-form anymore...
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    Fans too noisy in power supply

    As noted in the other posts, it's ok to replace the fan (which would assumedly be quieter), AS LONG as the replacement fan meets the airflow spec of the fan it's replacing. Circuits are engineered for a minimum amount of cooling and spec'd for mimimum fan airflow requirements. That requirement...
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    Dimensions of switch?

    The other thing to watch-out for is the pin footprint. Make sure the leads comming out of the switch, match to lead layout on the board.
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