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My Technis SU-Z25 has gone dead on one output channel

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Reconnect the speakers and confirm if the other speaker is working fine by switching. if so use a multimeter to check if any fusible resistors to the output is open. this can happen when there is a load on the output. make a voltage check with referance from the other channel.Some biasing to the stage can also be faulty/ The most possible chance could be the output drive.
Replace. Helpful? Good day

Posted on Jul 14, 2010

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1 Answer

Technis su-g88 no relay on


no relay on? you mean it's not powering up?

if you're not an electronics tech, take it to a repair facility

if you are an electronics tech, please be much more specific

Feb 19, 2015 | Audio Players & Recorders

1 Answer

What is the value of resistor R451 in Technics amplifier SU-Z25


If you are in the power supply, are you sure that one is used? 4xx series are power supply designations. Maybe numbers got transposed?
2 ways to approach it.
I am looking at an SUZ22 and an SUZ55, the power supplies are roughly the same. The closest component is R416 which is a 39 Ohm resistor. This supplies power to the flourescent display in a current limitng mode.

The alternate approach is where is it in the circuit? what is "downstream of it"?

If it was a larger 1 Watt or 2 Watt Try 1500 Ohms.

If it is the flourescent display, 39 ohms is most probable for manufacturer inventory purposes. If LCD, try 390.

If the preamp is downstream, it is not going to require a great deal of power, and you may be able to trace a parallel trace off the other channel to a corresponding resistor. If that has been tried and it just traces back to the same point, Try 1500 Ohms.

Also, there is symetry in the amplifier because it uses a split supply Vcc- and Vcc+ Not to mentione the symetry between right and left channels.

Jul 05, 2012 | Technics Audio Players & Recorders

1 Answer

Technics su-z65


Hello
Your Tchnics is too old model and it has power transistors are used in output section. The output power is rated as 50Watts/channel/4Ohms. You can connect extra speakers to this left and right outputs, such a sway that the impedence should not go bellow 4 Ohms. Its repair book informs me that if any of the output transistors has gone out, it will not be available any more, and no substitutions cam be done. So be care when connecting more speakers. OK.

Jan 06, 2012 | Technics Audio Players & Recorders

2 Answers

I have a technics SU-v500m2 amplifier connected via the aux input to my pc, i wish to link another amp to the same input, is this possible, and if so how?


Let's establish which is the IN and which is the OUT here. The PC is a Line Level source so its OUTPUT would feed one of the amp's Line Level INPUTs.

What's the second amp going to do in your scenario? Something other than the normal stereo channels; something multichannel (if your PC supports it); or just more speakers supported for the PC to feed?

An RCA Y-connector pair would share the stereo output of the PC with multiple Line Level destinations.

If a second amp with its own volume control is intended to share the same two channels with the SU-V500 it could also be slaved off the back of the SU-V500 wih an RCA patch pair exiting the Tape 1 or 2 REC(OUT) jacks. The second amp would receive full-volume audio from whatever source the SU-V500 is playing. Just don't activate the selected Tape monitor on the SU-V500 or you will cut off the source to both amps.

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1 Answer

My Lexmark Z25 is not recognized by my computer. I have had this printer for years and have tried every thing but to no avail.


I am assuming you have Windows XP.
1. Be sure you have selected the Z25 as the output device when the printer window appears. You may have an old printer selected - or some other output device (like "Microsoft Office Document Image Writer").
2. Open "Printer & Faxes" in the Control Panel. Is the Z25 there?
If not, go to:
http://support.lexmark.com/index?locale=en&productCode=Z25_COLOR_JETPRINTER&userlocale=EN_US&segment=DOWNLOAD&os=WINDOWS_XP&page=downloadsList&oslocale=en_US#1
and download a fresh driver - and install it.
3. Your cable may be broke. Your printer power may be broke. Does your power light come on?

Jul 23, 2010 | Lexmark JetPrinter Z25 InkJet Color...

1 Answer

My audiosource 2 channel amp is dead in the left channel


Hi...
There's not alot of innerds on these amps.
They use a TDA7294 amplifier chip in the 50 WPC version and I have one here with both outputs gone bad.

The chip is cheap (<$10)

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2 Answers

TECHNICS SU-V50


Hi max

I have done a followup with Technics Parts agents in the US, they will get back to me and then me to you shortly :) A vote as FixYa would help improve my ratings. Thanks

Graeme

Feb 06, 2008 | Technics SUV500 2-Channel Amplifier

1 Answer

Output volume has dropped in right channel


dear sir,pls check the HT voltage fuse, LTsupplay also and out put stage,and volume controle,

Jan 17, 2007 | NAD C350 2-Channel Amplifier

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