Toshiba TA8210H in Denon DCA-3120

azvrt · 24th November 2011, 04:45 PM

I just purchased a very old and very tiny Denon DCA-3120 amp.
I have opened it and apparently it makes use of Toshiba TA8210H.
Besides that there are mainly capacitors and resistors in there, not much else.
Is anyone familiar with this part ? Would there be a direct fit improved replacement part for this Toshiba ?

I would be funny to enhance the SQ of this miniature amp, if at all possible. I am afraid I don't have the schematics of this amp, but I'll try and post some pics of the inside if I can find some batteries for my camera

azvrt · 24th November 2011, 08:47 PM

Hooked it up, appears to be malfunctioning

Output is very, very low, and crackling sound comes out of speakers.
Measured some small transistors as well as other parts, didn't find anything out of the ordinary.
Could it be the chip ? Not much else in there

Will have to take some pics of the board.

Perry Babin · 24th November 2011, 11:08 PM

You need to look up the datasheet for the IC. Confirm that you have 12v on the power supply pins. If you do, confirm that you have 6v on each of the speaker terminals (black probe on the amp ground).

azvrt · 24th November 2011, 11:12 PM

All right will do. Cecil suggested that replacing the chip might very well do the trick as there's not much else in there, but we could also check it, first. I'll buy one anyway as it can come in handy in the future even if it's not broke now.

What do you mean by 6 volt on the speaker terminals ? I usually measure DC offset at the terminals, but you must be referring to something else.

Perry Babin · 25th November 2011, 01:18 AM

Read page 60 of the car audio site.

azvrt · 25th November 2011, 09:10 AM

I'm sorry I don't know what you are referring to by 'car audio site' ?
Is it a section here on DIYAudio ?

azvrt · 25th November 2011, 09:34 AM

You must be referring to bcae1.
If that's the case I'll have to figure out how to find page 60.
I've never looked at it as pages as in 1,2,3 etc but as in sections electrons, voltage, volt etc. Don't see any page numbers, maybe I am not looking right.

1moreamp · 25th November 2011, 03:03 PM

Look to the right of the page and then scroll down till you see page 60 and then click on the name and it will take you to the page directly. Each page has a number under its description...hope this helps...

azvrt · 25th November 2011, 03:26 PM

You guys must think I am really stupid

I STILL did not see numbers.
Then I used another browser, Internet Explorer instead of Google Chrome and now the numbers show

24th November 2011, 04:45 PM	#1
azvrt diyAudio Member Join Date: Dec 2010 Location: Netherlands	Toshiba TA8210H in Denon DCA-3120 I just purchased a very old and very tiny Denon DCA-3120 amp. I have opened it and apparently it makes use of Toshiba TA8210H. Besides that there are mainly capacitors and resistors in there, not much else. Is anyone familiar with this part ? Would there be a direct fit improved replacement part for this Toshiba ? I would be funny to enhance the SQ of this miniature amp, if at all possible. I am afraid I don't have the schematics of this amp, but I'll try and post some pics of the inside if I can find some batteries for my camera

24th November 2011, 11:08 PM	#3
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	You need to look up the datasheet for the IC. Confirm that you have 12v on the power supply pins. If you do, confirm that you have 6v on each of the speaker terminals (black probe on the amp ground). __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

25th November 2011, 01:18 AM	#5
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Read page 60 of the car audio site. __________________ Links >> Basic Car Audio Amp Repair * Basic Car Audio Electronics * New Site * Basic Switching Power Supply Design * Basic Computer Skills << Links

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24th November 2011, 08:47 PM	#2
azvrt diyAudio Member Join Date: Dec 2010 Location: Netherlands	Hooked it up, appears to be malfunctioning Output is very, very low, and crackling sound comes out of speakers. Measured some small transistors as well as other parts, didn't find anything out of the ordinary. Could it be the chip ? Not much else in there Will have to take some pics of the board.

24th November 2011, 11:12 PM	#4
azvrt diyAudio Member Join Date: Dec 2010 Location: Netherlands	All right will do. Cecil suggested that replacing the chip might very well do the trick as there's not much else in there, but we could also check it, first. I'll buy one anyway as it can come in handy in the future even if it's not broke now. What do you mean by 6 volt on the speaker terminals ? I usually measure DC offset at the terminals, but you must be referring to something else.

25th November 2011, 09:10 AM	#6
azvrt diyAudio Member Join Date: Dec 2010 Location: Netherlands	I'm sorry I don't know what you are referring to by 'car audio site' ? Is it a section here on DIYAudio ?

25th November 2011, 09:34 AM	#7
azvrt diyAudio Member Join Date: Dec 2010 Location: Netherlands	You must be referring to bcae1. If that's the case I'll have to figure out how to find page 60. I've never looked at it as pages as in 1,2,3 etc but as in sections electrons, voltage, volt etc. Don't see any page numbers, maybe I am not looking right.

25th November 2011, 03:03 PM	#8
1moreamp diyAudio Member Join Date: Dec 2005 Location: Northern California	Look to the right of the page and then scroll down till you see page 60 and then click on the name and it will take you to the page directly. Each page has a number under its description...hope this helps...

25th November 2011, 03:26 PM	#9
azvrt diyAudio Member Join Date: Dec 2010 Location: Netherlands	You guys must think I am really stupid I STILL did not see numbers. Then I used another browser, Internet Explorer instead of Google Chrome and now the numbers show

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