Question about TC Electronic Finalizer EXpress Compressors Limiter Gates

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TC Electronic D-Two Power unit locked up display

This TC Electronic D-Two unit has a problem with the power supply. The dc supply voltages to the mainboard (3.3vdc, 5.0vdc & +- 15vdc) are always on as long as the unit is plugged into an active ac power source. When the front panel soft power switch is pressed, the units' LCD display is random jargon without any functions or readable text. The DC power supply voltages never fluctuate. It seems the unit must need some sort of start pulse or reset signal from the power supply to get the unit running properly. Has anyone worked on a power supply system like this before. I don't believe that TC would release the schematics to end users.

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I don't know if this will help. Have you looked for a battery on the circuit board that backs up the memory? A lot of synths use them and when they go the unit quits functioning. Some will start right up again once the battery is replaced others require a system update through a download. Anyways I always recommend contacting the company in question. They should be able to tell you simply whether it needs servicing or not:http://tcsupport.custhelp.com/cgi-bin/tcsupport.cfg/php/enduser/ask.php

Posted on Jul 14, 2010

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Posted on Jan 02, 2017

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Please help me obtain a TC Electronics BG250 schematic


Try Googling (TC)(BG250)(manual) without parens.

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Model Yamaha ME-50 no power


John
With AC power off.
Use a meter (on Ohms scale) to check internal fuse for blown (open) fuse.
If you feel qualified & safe with AC Power On.
Check input to internal power supply on AC Scale (Caution when AC is on) for volts in.
Use meter on internal Power Supply for "probably" DC volts leaving internal Power Supply electronics to power the rest of the electronic circuits.
Switch mode power supplies can break down. They stop doing their high frequency switching so they don't convert AC to DC.
If this P/Sup is a separate box or circuit board, inside the unit, then it can have a part number & be replaced.
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1 Answer

When i turn my org display is empty


It is power supply regulator problem.
In the regulator circuit, DC 12volt from adapter is separated into +8V, -8V, +5VA, +5VD. Some causes when the unit hang /blank/ frozen is one of the existing supply voltage is drop. In general, +5V.
Also check the adapter voltage, if still normal and the current is sufficient.
Adapter must have DC12volt and current of at least 3 amperes.
It may happen, when the adapter is measured without load, it's read normal 12v, but when loaded to turn on the keyboard, many voltage decreases (lets say,between 8-10v).
This indicates that the adapter is not good and need to replace.

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1 Answer

VoiceLive


I had this problem. I sprayed the switches with contact cleaner from outside and jiggled them a bit. I also powered it from a different socket. The problem has not recurred since.

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1 Answer

My digitech rp 500 has power supply but it won't


Make sure you have the OFFICIAL Digitech power adapter. Universal adapters or those for MOST other pedals will NOT work... things may light up but you will NOT get audio. This unit requires an adapter supplying 9 VAC (not DC) at about 1 amp. These AC output adapters are not very common and people get the units without an adapter and try using universal adapters and they do not work. An AC adapter is used by Digitech so they can generate both plus and minus voltages internally. I don't know what your utility power voltage is in Cebu, so you need to get an adapter for your voltage that will give 9 VAC output and fit the power jack on the unit.

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1 Answer

My Rocktron Utopia G200 displays DSP RESETTING, no sound, no controlls possible... What can I do?


The symptoms indicate either the WRONG power adapter is being used or the adapter is failing. This unit uses a 9VAC (not DC adapter like many pedals) adpater. If you are trying to use a DC adapter or a multiple pedal power supply that is your problem. Use ONLY the correct power supply with this unit.

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1 Answer

Hi my tc finalizer (upgradet to fin plus) recently stays switches off. the problem is always after switching on the complete environment. it needs a while that th tc ´s display is lighted. these...


First try the self test function.

If it will not respond I suspect the unit has a power supply problem and will require servicing. This is an internal thing and not DIY unless you have electronic experience.

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1 Answer

I have a rhodes 660, and it doesnt trun on. all u hear is a buzzing sound. does anyone know whats wrong.


This is LIKELY a power supply problem. The unit should have a label telling the power requirements. Match the polarity on DC units as well as the type AC od DC and voltage and current.

I suspect the input voltage from the supply is way lower than the required.

Apr 22, 2010 | Music

1 Answer

Turn on the organ and get a loud hum.......


Chances are you're hearing "60-Hertz" hum that comes from poor filtering in the organ power supply. Electronic circuits need direct current (DC) but our power lines supply alternating current (AC). The power supply converts the AC to the various DC voltages needed. Parts called filter capacitors smooth out the voltage, and if they go bad or lose contact because of bad connections the result can be the hum you're hearing.

There are other possible causes, but the filtering is so common it's a good place to start. You don't give the age of this organ, but if it's one that has been around a while, it's a good bet some of those capacitors are worn out.

If you can post a follow-up with a make and model, I'll check some of the technician groups and see if anybody has service information.

Good luck and thanks for using Fixya!

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2 Answers

External power problem


It's actually the opposite. 1/8" jacks are almost always positive tip. I think you are best off using a 9VDC supply. If the voltage is not staying constant at 9 volts it could certainly do damage. If the supply you used was a negative tip positive sleeve you may have burned out a component or two...and more voltage than recommended could have done some other bad things. If it does not work with a 9VDC supply with the correct polarity you can fix it yourself if you have electronic experience. You could also send it to me and I'll fix it at a reasonable rate.

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