| Subject | Text |
| Mackie SRM450, signal and peak led on, no output. Fixed. | Hiya
Just repaired a Mackie SRM450 with thermal and signal indicators always on. R282 and R283 10 O |
| AFT coil | AFT is an abbreviation for "automatic fine tuning". The coil is part of an oscillator or band pass c |
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| Sounds strange to me that initially you could get a sweep across the screen either horizontally or v |
| SCMI---Great Test & Measurement Software for free downlo | website: http://www.virtins.com
PC version: http://www.virtins.com/SCMISetup.exe
Pocket PC Versio |
| jts,
Thanks to vtech's schematic, I was able to read voltages as follows:
CN204
pin 1 gnd
p |
| CD104 focus problem - need guidance | G'day,
Philips CD104 (actually Marantz CD44) spindle won't run. It tries to focus, but I suspect t |
| There are many simple remote control units aimed at hobbyists, available at distributors like RS Com |
| Service Manual wanted: "Nokia ValueGraph 417TV" | I need the service manual/ schematics for the PC monitor "Nokia ValueGraph 417TV". It is a |
| PC power supply suggestion ? | Assuming it is connected correctly and this power unit operated normally before hand It could just b |
| Sunfire True Sub Not your normal Sub. | This is not the normal one IC Sub.It has no les than 10 IC's and lots of control and switching circ |
| Based on your description & reading a low resistance all of a sudden---it all points to a non-re |
| Audio Oscilloscope, Spectrum Analyzer, Signal Generator... | website: http://www.virtins.com
VIRTINS Sound Card MultiInstrument (SCMI) consists of a sound car |
| Try supplying a 1 kHz sine signal from a tone generator to an AUX input and look at the output signa |
| Re: Blown Fuse - Troubleshoot Why | Hi VTech,
I'll hold off on the oscilloscope purchase for now. Thanks for your insight about scopes |
| Voltage = distance in cm × volts/cm
Example: peak-peak voltage = 4.2cm × 2V/cm = 8.4V
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| [quote:de46426e87="fpc3"]jts,
Thanks to vtech's schematic, I was able to read voltages as follows |
| Found a service bulletin | SYMPTOM;
The DSP fails to operate properly. Unusual noise is made or no sound is heard.
[i:559c1 |
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| If you look at the datasheets, you will see that although the two parts are similar, there is one ma |
| Output power can be determined from the RMS voltage and the impedance of the load using P = V^2/R
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| Ok.........curve ball..........Isn't the keyword here "draw"....?
Doesn't a device hoo |
| Sound Card Oscilloscope, Spectrum Analyzer, Signal Generator | PC version: http://www.virtins.com/SCMISetup.exe
Pocket PC version: http://www.virtins.com/PocketI |
| Re: Found a service bulletin | [quote:f2ceec294f="Cerberos"]SYMPTOM;
The DSP fails to operate properly. Unusual noise is made or n |
| Measuring output power | How do i measure RMS output power?
How do i measure AC voltage output power?
How do i measur |
| Hi,
Always unsolder at least one pin of electrolytics for ESR measurements, most of the time you' |
| Zenith SM2745MK86 Whites are blurred | I have a 12 year old Zenith SM2745MK86 27" console TV that has started losing it's sharpness. S |
| Samsung Service Mode Suggestion | 1. Enter the Factory Mode. Press the remote-control keys in this sequence:
PICTURE OFF(RED KEY) - D |
| Just measure the voltage and current
RMS power = RMS V X RMS I
or just P=V X I
Peak = 1. |
| Re: Service Manual wanted: "Nokia ValueGraph 417TV" | [quote:7bfa9a96c3="CYBERYOGI =CO=Windler"]I need the service manual/ schematics for the PC monitor & |
| Pioneer SX-950 Information | I have a pioneer SX-950 with a manufacture date sticker of 1969. About ten years ago I found it in s |
| It is probably due to the fact that the power supply repeatedly shuts down due to overcurrent and th |