Technics SU-Z55 chip replacement

ToMiC · 18th January 2011, 12:11 PM

Hello all
I recently got this amp very cheap...
So im interested in replacement for STK2038B coz this original one is not working...
I couldnt find that chip here on the market (Serbia)
All i was able to find is STK2038 IIcl so im wondering can i use it as a replacement?
Thanks!

raindog · 19th January 2011, 04:16 AM

According to this: [TechAssist] Re: looking for STK2038 (or 20x8) pinout or datasheet - techassist - FreeLists , you can't ( different number of pins and probably pin-out ) it's probably easier to build a new amp module with an ic that has similar voltage requirements and power output.

jaycee · 19th January 2011, 05:14 AM

The STK 2038 is notorious for failure, and when it does it often takes the voltage amp IC, AN7062 with it.

These amps are nothing particularly special to be honest.

ToMiC · 19th January 2011, 01:46 PM

Ye i know
Since im beginer in audio electronics i alrdy managed to fix one hitachi amp with STK ic...
This Technics amp was one of many i mean realy many fail amps with STK hybrid inside... So for start of my electronic experience all i can say is run away from STK amps as far as u can!

ashokavarthanan · 8th June 2011, 06:16 PM

Quote:

Originally Posted by ToMiC

Hello all
I recently got this amp very cheap...
So im interested in replacement for STK2038B coz this original one is not working...
I couldnt find that chip here on the market (Serbia)
All i was able to find is STK2038 IIcl so im wondering can i use it as a replacement?
Thanks!

Technics SU-Z55 chip replacement
i own this model amp..too.
but deth ic...
i replace new amplifier stk4231 ic with new board to add and some alter
and find i/o con output to stk4231 amp very nice....
and increase caps 10000mfd 63v per rail
works very fine.

Andy5112405 · 8th June 2011, 06:33 PM

cricklewoodelectronics.com list the STK2038 II but I have no idea if this is the same as the STK2038B.

pinguino · 11th November 2011, 08:49 AM

Hi,
I have the same problem on Technics SU-V2X, I have ordered the STK2038 but i'm not shure if it is pin compatible with the STK2038IV.
Does anyone have a datasheet of the STK2038 ?
What is the best replacement ? I would like to have class A or Technics new class A output stage. Any suggestion ?

pinguino · 16th January 2012, 05:08 PM

Works, I have replaced the STK2038IV with STK2038, no change on the mainboard of the SU-V2X

18th January 2011, 12:11 PM	#1
ToMiC diyAudio Member Join Date: Dec 2010	Technics SU-Z55 chip replacement Hello all I recently got this amp very cheap... So im interested in replacement for STK2038B coz this original one is not working... I couldnt find that chip here on the market (Serbia) All i was able to find is STK2038 IIcl so im wondering can i use it as a replacement? Thanks!

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19th January 2011, 04:16 AM	#2
raindog diyAudio Member Join Date: May 2003 Location: Timisoara	According to this: [TechAssist] Re: looking for STK2038 (or 20x8) pinout or datasheet - techassist - FreeLists , you can't ( different number of pins and probably pin-out ) it's probably easier to build a new amp module with an ic that has similar voltage requirements and power output.

19th January 2011, 05:14 AM	#3
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	The STK 2038 is notorious for failure, and when it does it often takes the voltage amp IC, AN7062 with it. These amps are nothing particularly special to be honest.

19th January 2011, 01:46 PM	#4
ToMiC diyAudio Member Join Date: Dec 2010	Ye i know Since im beginer in audio electronics i alrdy managed to fix one hitachi amp with STK ic... This Technics amp was one of many i mean realy many fail amps with STK hybrid inside... So for start of my electronic experience all i can say is run away from STK amps as far as u can!

8th June 2011, 06:33 PM	#6
Andy5112405 Banned Join Date: Nov 2006 Location: Torpoint	cricklewoodelectronics.com list the STK2038 II but I have no idea if this is the same as the STK2038B.

11th November 2011, 08:49 AM	#7
pinguino diyAudio Member Join Date: Nov 2011 Location: Rome	Hi, I have the same problem on Technics SU-V2X, I have ordered the STK2038 but i'm not shure if it is pin compatible with the STK2038IV. Does anyone have a datasheet of the STK2038 ? What is the best replacement ? I would like to have class A or Technics new class A output stage. Any suggestion ?

16th January 2012, 05:08 PM	#8
pinguino diyAudio Member Join Date: Nov 2011 Location: Rome	Works, I have replaced the STK2038IV with STK2038, no change on the mainboard of the SU-V2X

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