hi everyone i have some electronic components home, i have an amplifier board alone i mean no alimentation no pre amp nothing would like to make and use it.
it has kta1268. ktc3206. 2sc4137. 2sd2493
as ic's. its already assembled....
just need an preamplifier board, a digital to analog converter,electrical converter to use with the amp and speakers board and protection.
it has kta1268. ktc3206. 2sc4137. 2sd2493
as ic's. its already assembled....
just need an preamplifier board, a digital to analog converter,electrical converter to use with the amp and speakers board and protection.
Attachments
Quite an impolite answer, doubly so to a new Forum member. And useless too.
1) welcome to the Forum.
2) weird. Did you pull it from a working system?
Did somebody sell it , assembled, at EBay or some auction or surplus site?
IF so, ask them for documentation, not only the bare schematic but also some assembly and construction ideas.
As-is, you "almost" have nothing or very little.
At the very least you´ll need a chassis and cabinet to mount it, heatsinks, a power supply (transformer/rectifier/capacitors), plus hardware (connectors, switches, pots, knobs, fuse holder, lots of cable), etc.
Even more important: tools and assembly skills; have you built an amp before?
This is not exactly a beginner´s project and requires lots of experience.
thanks for you'r answers yes i had an amp it was working fine until one day..
i almost still have all the parts some off them are broken ir really damaged. its from an Thomson dpl 550ht receiver
i almost still have all the parts some off them are broken ir really damaged. its from an Thomson dpl 550ht receiver
He has stripped the parts out from an old unit, and given that those are STK, probably blown.
No idea if parts are missing.
Possibly dumpster find.
Wants to sell, not willing to pack.
It is scrap, AFAIK.
So my reply was not encouraging.
No idea if parts are missing.
Possibly dumpster find.
Wants to sell, not willing to pack.
It is scrap, AFAIK.
So my reply was not encouraging.
Jan hi there, yes you'r right its an 5.1 Amp and honestly i love electronics so it is a kind stud, learning ... and by the way i already have all the tools needed for the work just still need some pcb.s and helping arms.
Jan hi there, yes you'r right its an 5.1 Amp and honestly i love electronics so it is a kind stud, learning ... and by the way i already have all the tools needed for the work just still need some pcb.s and helping arms
Wonder where you pulled that from, completely contrary to what OP stated.
Suspicious minds are very good for CI/KGB/State Attorney/Investigative Reporter minds, normal people do not need that.
back to the OP problem:
in general and unless they or their in-laws own a metal working shop or equivalent, the MAIN stumbling stone for home hobbyists is not the "Electronic" problems they must solve, but the Q"mechanical" ones.
I already mentioned (and not by chance):
so SHOW us what you have first.
Pictures, not verbal descriptions.
FWIW I found the Service Manual (which YOU should have included and where you pulled the PCB image) and it´s a VERY VERY complex receiver, where even plain servicing is scary.
And that, talking as an experienced Tech.
SHOW what you call
sorry for all this misunderstanding
here i will join all the pictures of what i have and what i want to do, you already know i guess thanks to all of you ..
i have a lot off electronic material here actually i ve been studying this stuff for a time now let's say i'm entering action ..
i have many amps this pictures are from an Thomson dpl 550ht receiver and normally i have all the components needed just need some pcb's or advices.. thanks .
here i will join all the pictures of what i have and what i want to do, you already know i guess thanks to all of you ..
i have a lot off electronic material here actually i ve been studying this stuff for a time now let's say i'm entering action ..
i have many amps this pictures are from an Thomson dpl 550ht receiver and normally i have all the components needed just need some pcb's or advices.. thanks .
Attachments
and please i have posted to question's about amps one is already ready and the other is about the STK's whom I'm shure they are originals cause i pulled them out a sony mini hi fi and an receiver 5.1 Hitachi from who i still have the parts laying around. i want to make an great amp with all of this piece's STK's. ic's ..... etc and add some thing's like a dvd motherboard i mean with out the cd player and front panel with the screen and memory card and USB... also thinking to add Bluetooth and a dac all this in one pretty box that gave designed specific for my first electronics work. p.s already done some reparations in the past but not like this where i want to go a step further very far..
thanks to you all.
thanks to you all.
Thanks.
Ok, so far you have a power amp board with 6 of them, already mounted on a heat sink.
That´s the core.
You also show a power transformer, which should be connected to a PSU (which I can´t see).
I´d start by connecting that transformer to Mains, and read voltages available.
pleas post what you measure.
For safety use a lamp bulb current limiter,a 100W bulb should be fine.
A real glass and hot metal bulb, not a LED one.
IF it works then you can connect it to power board.
Measure rail voltages at each board and check you have Zero DCV at speaker outs (all 6 of them). up to 100mV DC is acceptable.
IF all work, try connecting a speaker at each one in turn, and feed some Audio at the proper input.
IF all work, you can wire all inputs to a set of RCA connectors and use that 6 channel amp as you wish.
Don´t even dream of DIY building a decoder but you will probably find one at EBay or AliBaba or equivalent.
PRAY everything works, I would HATE to work on that hot glue covered PCB and so will most Techs (except masochist ones, of course).
Ok, so far you have a power amp board with 6 of them, already mounted on a heat sink.
That´s the core.
You also show a power transformer, which should be connected to a PSU (which I can´t see).
I´d start by connecting that transformer to Mains, and read voltages available.
pleas post what you measure.
For safety use a lamp bulb current limiter,a 100W bulb should be fine.
A real glass and hot metal bulb, not a LED one.
IF it works then you can connect it to power board.
Measure rail voltages at each board and check you have Zero DCV at speaker outs (all 6 of them). up to 100mV DC is acceptable.
IF all work, try connecting a speaker at each one in turn, and feed some Audio at the proper input.
IF all work, you can wire all inputs to a set of RCA connectors and use that 6 channel amp as you wish.
Don´t even dream of DIY building a decoder but you will probably find one at EBay or AliBaba or equivalent.
PRAY everything works, I would HATE to work on that hot glue covered PCB and so will most Techs (except masochist ones, of course).
He had put up the parts for sale on another thread.
https://www.diyaudio.com/community/threads/stk-ics-amp-boards.387604/latest
No detective work involved, or suspicious mind.
I told him to put details in the commercial section.
He was like too much work to pack and ship.
These seem to be taken from old sets, I think a better approach would be to start simple, but I have no idea of his skill level.
From #12 above: "pretty box that gave designed specific for my first electronics work"
First time builder building this? 🙄
I would use an old desktop or laptop as the source, DVD and DAC are available inside, then only power amp needs to be made.
And building a Frankenstein like this is ...well, no need really to tell @JMF all about it, he knows.
So do most of the senior members.
From #5 above:"thanks for you'r answers yes i had an amp it was working fine until one day.."
Pulled STKs, from sets known to have been not working, and a mish mash of bits from two or more units, adding more parts from new sources.
Difficult for persons with little experience, to put it mildly.
https://www.diyaudio.com/community/threads/stk-ics-amp-boards.387604/latest
No detective work involved, or suspicious mind.
I told him to put details in the commercial section.
He was like too much work to pack and ship.
These seem to be taken from old sets, I think a better approach would be to start simple, but I have no idea of his skill level.
From #12 above: "pretty box that gave designed specific for my first electronics work"
First time builder building this? 🙄
I would use an old desktop or laptop as the source, DVD and DAC are available inside, then only power amp needs to be made.
And building a Frankenstein like this is ...well, no need really to tell @JMF all about it, he knows.
So do most of the senior members.
From #5 above:"thanks for you'r answers yes i had an amp it was working fine until one day.."
Pulled STKs, from sets known to have been not working, and a mish mash of bits from two or more units, adding more parts from new sources.
Difficult for persons with little experience, to put it mildly.
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and body nareshbrd i could show you if you needed to , how to add parts to existing things like amps and instead of a computer or laptop it's cheaper and much easier to use an old GSM from whom you take off the battery and deactivate all the software that you wont use for multimedia applications add a program for keyboard and control from other gsm or tablet or pc or... use it as an receiver for audio video even you can plug it to a tv with adapters and the audio to the power amp or amplifiers you can also attach a bigger screen if you wanted to like an 7 or 11 inch just need to do some screw's and that will be it !!! and don't forget to move the buttons of the gsm i mean put them somewhere else like the side of the amp box or the front panel and connect it with line cable's and HDMI to the tv and power amp
leave the wi Fi and blue tooth always on like nfc for example. and search for AAC and other hi res sound capabilities.
leave the wi Fi and blue tooth always on like nfc for example. and search for AAC and other hi res sound capabilities.
I´d love to see how you extract decoded 5.1 signals from "an old GSM phone", lobotomize its software so only "audio related" remains, how you drive a 7-11 inch screen from its internal video driver, specially using a few screws, and finally getting an HDMI output out of it.
I am starting to suspect this is not a very practical project.
I am starting to suspect this is not a very practical project.