Dead Or 2 Dot Boxes

[jambutty]

Hope I ain't boring anybody on this issue of dead or 2 dot syndrome.

OK wot I wanna say is this, lots of people have been sending boxes to me saying it's a psu issue BUT 90% of the boxes I have tested are not psu issue's.

In an ideal way it is so easy if yer got a spare psu or a mate near by has same box and yer can put thier psu in ur box as a quick test, because if yer just put it down to being a psu issue and then yer start unsolderin the caps and diodes and then they read ok then yer wasted lots of time testing a psu yer thought was faulty when in fact it's not.

No disrespect meant here but most people offering help on this put it down to cap 14 (which IS DEFFO prone to shorting), but on all psu's I have repaired cap 14 is about 20% of the problem, it may be a rectifier diode or the FET at tha back of the small transformer (this is what starts the switchmode psu up)

OK the best way to go about solving a dead or 2 dot syndrome is as follows:

01 Ideally put a working psu in the unit if yer got one or a mate has same unit, if it fires the unit up then we can rule out it being a psu fault.
02 OK If a known working psu fired the box up then it's not a psu issue.
03 Next test is try to jtag the unit because the eeprom chip may be faulty, if yer box just shows 2 green dots and no RED standby light is lit then it's deffo a fault on the second board AND WHEN YER TRY TO JTAG THE UNIT and the PC WON'T TALK TO EACH OTHER IF THIS HAPPENS there's NO WAY of reparing this BECAUSE A CHIP (AND POSSABLY THE EEPROM HAS SHORTED) SO FORGET IT, BOX IS DEFFO SHAGGED.
04 If yer lucky and get 2 green dots AND THE RED STANDBY LIGHT IS LIT THEN YER GOT A 85-90% CHANCE OF GETTIN THIS BOX REPAIRED, ALL YER NEED TO DO IS JTAG IT, IF YER BOX TALKS TO THE PC AND IT WILL JTAG THEN GREAT STUFF COS THIS WILL SORT YER BOX OUT.

These tips will solve most problems on a Dead psu/box.

Just hit the thanks button and let us all know if this tt helps yer out.
Regards Alan AKA jambutty.

[beano]

not quite sure what advice your offering here,if any
another pointless jambutty post lmao

have a thanks anyway as it made me laugh, again

[gadgetfiend]

Originally Posted by jambutty

01 Ideally put a working psu in the unit if yer got one or a mate has same unit, if it fires the unit up then we can rule out it being a psu fault.
02 OK If a known working psu fired the box up then it's not a psu issue.

The first 2 points you make here do not make any sense whatsoever, if you put a working PSU in the unit and it fires up then this tells you that it certainly is a psu fault 100%.....

Also for info purposes ive repaired loads of max blue units with 2 dots and no standby light and nearly always its the cap at c14 thats gone. So telling folk its deffo shagged with these symptoms is wrong.

[MorriSoft]

Originally Posted by beano

not quite sure what advice your offering here,if any
another pointless jambutty post lmao

have a thanks anyway as it made me laugh, again

Made sense to me, and if I owned a Eurovox it would be good to know..

Thanks anyway Alan, good stuff.

Originally Posted by gadgetfiend

The first 2 points you make here do not make any sense whatsoever, if you put a working PSU in the unit and it fires up then this tells you that it certainly is a psu fault 100%.....

If you re-read it, sure there are a few mistakes, but, it does make sense

Nothin a quick typo edit couldn't sort either!

[gadgetfiend]

not really m8, i know he means well but the info is wrong. no offence JB

[waqasahmed]

Originally Posted by beano

not quite sure what advice your offering here,if any
another pointless jambutty post lmao

have a thanks anyway as it made me laugh, again

pointless? Not pointless at all. Fair enough the top two instructions came out wrong, but I reckon you could spot the instructions easily. Also JB has made guides before as well that were NEVER STICKIED and I think a lot of JB's guides need stickying

[jambutty]

The first 2 points you make here do not make any sense whatsoever, if you put a working PSU in the unit and it fires up then this tells you that it certainly is a psu fault 100%.....

Also for info purposes ive repaired loads of max blue units with 2 dots and no standby light and nearly always its the cap at c14 thats gone. So telling folk its deffo shagged with these symptoms is wrong.

Wot I am saying if u read this right is this, some people assume a 2 dot is down to a psu fault or a jtag when it may be something else and you seem to have cap 14 on the brain, yea cap 14 is prone to shorting but so are other caps and diodes.
If you got a euro with 2 dots then it's quicker if you have a spare working psu to eliminate time and testing (I have spare psu's and before I waste time testing a psu I will put a working psu in the unit, if it fires up THEN it's not a faulty psu), so we don't need to waste time unsoldering caps and diodes and we need to now try to jtag the box, if after trying a jtag and box and pc will not talk to each other then the box is shagged 100% becuase after trying a jtag and it don't talk then yer got a shagged chip on the second boaard and possably a bad eeprom which is shagged and can not be repaired becuase they are assembled by robots.
IS THIS ANY CLEARER TO YOU NOW GADGETFRIEND.
Alan aka jambutty.

[jambutty]

not quite sure what advice your offering here,if any
another pointless jambutty post lmao

I see that you have only made 7 post mate, I try to help people, wot do you do, yer come on here and try to belittle me saying it's a useless post, if it's a useless post then don't ****ing read my post so **** off.

[gadgetfiend]

Originally Posted by jambutty

IS THIS ANY CLEARER TO YOU NOW GADGETFRIEND.

NO ITS STILL MIND BOGGLING TO ME JAMBRUTTY

Originally Posted by jambutty

If you got a euro with 2 dots then it's quicker if you have a spare working psu to eliminate time and testing (I have spare psu's and before I waste time testing a psu I will put a working psu in the unit, if it fires up THEN it's not a faulty psu), so we don't need to waste time unsoldering caps and diodes .

No disrespect meant here m8 but I am reading your posts correctly its you who seems to have difficulty writing them.... Your at it again with the above post, let me try to clear this up for you once and for all, because at first i thought you had typed it wrong but now im not so sure...... If you have a unit with the dreaded 2 dots, and you decide to try a known working PSU in it and it fires up then you can be 100% certain that it IS a PSU fault. If the unit DOES NOT fire up with the working PSU then it is 100% certain that it is NOT a PSU fault.

[waqasahmed]

If you got a euro with 2 dots then it's quicker if you have a spare working psu to eliminate time and testing (I have spare psu's and before I waste time testing a psu I will put a working psu in the unit, if it fires up THEN it's not a faulty psu

Im sure in JB's head he was meant to say something like

If you got a euro with 2 dots then it's quicker if you have a spare working psu to eliminate time and testing (I have spare psu's and before I waste time testing a psu I will put a working psu in the unit, if it fires up THEN and you still get the same error as before it's not a faulty psu

You can easily spot the error. So maybe it didnt translate well to the tinternets, however, you can see the error really easily. simples