Yet another Volume controlers and source selections

[aditya]

I didn't have issue with 8515 but this m8 has been my problem and thank you very much will try it again. And a very happy new year.

 

[FarmTech]

M8 dont have JTAG

fuse is : LOW E4 HIGH D9
Intern 8Mhz

 

[iTiberius]

M8 dont have JTAG

fuse is : LOW E4 HIGH D9
Intern 8Mhz

M8 !?
Thanks for correcting me !

Regards,
Tibi

 

[aditya]

hii it workd guys, finally

check you PM Farmtech please

 

[aditya]

here are some pics of the dthing

 

[FarmTech]

Yes if you dont connect 7439
then it dont startup do to the I2C commands for init 7439

Found a error in trible so you have to get the files again from my server
added the new file into old zip

I see you used Cap for 7439 I plan to use WIMA cap for most
(0.47Uf & 2.2Uf)
here i will use mundorf mkp

 

[aditya]

this was trial board actuall board when all is done will have the box caps yellow colour box caps, the ones u showed are all dream caps for me,, if i were to get them it would be a nice hole in my pocket which would be like i m buying some low mid range Polk bookshelf speaker in india

 

[aditya]

Madisound Speaker Store

i'll need atleast say 8 of these so that would $170 odd plus shipping.. god speakers are cheaper than caps,,,

just a wierd point not ment to hurt anyones feeling so dont take it in a wrong way guys
i m in india so dollar conversion really kicks me in the back

 

[FarmTech]

Madisound Speaker Store

i'll need atleast say 8 of these so that would $170 odd plus shipping.. god speakers are cheaper than caps,,,

just a wierd point not ment to hurt anyones feeling so dont take it in a wrong way guys
i m in india so dollar conversion really kicks me in the back

try this link
MKP CAPS

 

[Jempie]

Finally the volume control work thanks to Farmtech.
only the LM1117DT-5.0 gettig hot after 5 min the display goes down.

 

[FarmTech]

Finally the volume control work thanks to Farmtech.
only the LM1117DT-5.0 gettig hot after 5 min the display goes down.

I think you draw to muts current via LM1117DT-5.0
Or your input Volt is to high

can you post the sch or send it via email

 

[Jempie]

http://www.vicol-audio.ro/img/volume-controller/VC_R2R&Shunt buffered_20101406.pdf

 

[FarmTech]

http://www.vicol-audio.ro/img/volume-controller/VC_R2R&Shunt buffered_20101406.pdf

ok backlight maybe to high

 

[Jempie]

Framtech, voltage 4,65 volt

 

[didiet78]

I think Farmtech mean not voltage but cuurent for LCD backlight. Add resistor 100-470 to Pin A or K. Or try omit Q7 or R10 first to check.

 

[FarmTech]

Framtech, voltage 4,65 volt

what trafo supply volt (AC) do you have and mA ?

can you messure volt before LM1117DT-5.0 and after (4,65 volt)

did you check board for soilder errors ?

@ didiet78 : sorry yes of cause it was current i mean
some backlight use alot of current if setup is wrong and then LM1117DT is working to hard

 

[Jempie]

FarmTech, yes i have check more then 10 times the components
there is no difference between schematic and board.

i use winstar WH1602L-TMI-ET display with no resistors on A-K for the blacklight
i use 14 V AC is this to high?

 

[FarmTech]

FarmTech, yes i have check more then 10 times the components
there is no difference between schematic and board.

i use winstar WH1602L-TMI-ET display with no resistors on A-K for the blacklight
i use 14 V AC is this to high?

Well
14VAC = about 20Vdc
9VAC = about 12VDC

try a lower VAC I think thats why you have heating problems
see datasheet Page 4 Output Voltage
it show max 12VDC for high current use

 

[didiet78]

Danzup, in post http://www.diyaudio.com/forums/analog-line-level/149597-yet-another-volume-controlers-source-selections-12.html#post2074525 can i just change PGA2310 with PGA2311 and change analog supply with +/-5V without change the HEX file?

Didiet

 

[iTiberius]

FarmTech, yes i have check more then 10 times the components
there is no difference between schematic and board.

i use winstar WH1602L-TMI-ET display with no resistors on A-K for the blacklight
i use 14 V AC is this to high?

Jempie,

LM1117DT is a low drop regulator. Use a trafo with min 6V ac - max 9V ac.

Regards,
Tibi