🚀 go-pugleaf

On Apr 24, 6:14 am, Sylvia Else <syl...@not.at.this.address> wrote:
> My longserving SOLA 325 UPS suddenly quit yesterday.
> Anyone have a sevice manual, or schematic, for this model?

http://www.eserviceinfo.com/download.php?fileid=19986

Jean-Christophe wrote:
> On Apr 24, 6:14 am, Sylvia Else <syl...@not.at.this.address> wrote:
>> My longserving SOLA 325 UPS suddenly quit yesterday.
>> Anyone have a sevice manual, or schematic, for this model?
> 
> http://www.eserviceinfo.com/download.php?fileid=19986

Thanks, but that appears to be from the 305 model, which seems to be 
different.

In the mean, time I've discovered that the reason it's completely dead 
even on battery is that the 40A fuse to the battery has blown. 
Disconnecting the large transformer and shorting out the fuse allows the 
display to light, go through its initialisation cycle, and then indicate 
a fault.

The failure of the fuse wouldn't explain why the device won't run while 
on mains power, so the fuse is presumably a symptom of something else.

Sylvia.

Sylvia Else wrote:

> Jean-Christophe wrote:
>> On Apr 24, 6:14 am, Sylvia Else <syl...@not.at.this.address> wrote:
>>> My longserving SOLA 325 UPS suddenly quit yesterday.
>>> Anyone have a sevice manual, or schematic, for this model?
>> 
>> http://www.eserviceinfo.com/download.php?fileid=19986
> 
> Thanks, but that appears to be from the 305 model, which seems to be
> different.
> 
> In the mean, time I've discovered that the reason it's completely dead
> even on battery is that the 40A fuse to the battery has blown.
> Disconnecting the large transformer and shorting out the fuse allows
> the display to light, go through its initialisation cycle, and then
> indicate a fault.
> 
> The failure of the fuse wouldn't explain why the device won't run
> while on mains power, so the fuse is presumably a symptom of something
> else.
> 
> Sylvia.

It could just be fatigue !

-- 
Best Regards:
                     Baron.

On 24 avr, 15:42, Sylvia Else <syl...@not.at.this.address> wrote:
> Jean-Christophe wrote:
> > On Apr 24, 6:14 am, Sylvia Else <syl...@not.at.this.address> wrote:
> >> My longserving SOLA 325 UPS suddenly quit yesterday.
> >> Anyone have a sevice manual, or schematic, for this model?
>
> >http://www.eserviceinfo.com/download.php?fileid=19986
>
> Thanks, but that appears to be from the 305 model, which seems to be
> different.

Uh, sorry ... not close enough ?

> In the mean, time I've discovered that the reason it's completely dead
> even on battery is that the 40A fuse to the battery has blown.
> Disconnecting the large transformer and shorting out the fuse allows the
> display to light, go through its initialisation cycle, and then indicate
> a fault.

I strongly suggest that you replace the fuse, because the
unknown fault might make things worse, and you may
blow up the whole unit ( which could solve the problem )

> The failure of the fuse wouldn't explain why the device won't run while
> on mains power, so the fuse is presumably a symptom of something else.

Sure it is. Sorry I didn't  find the manual.

What is the error/fault message on the display ?

Jean-Christophe wrote:
> On 24 avr, 15:42, Sylvia Else <syl...@not.at.this.address> wrote:
>> Jean-Christophe wrote:
>>> On Apr 24, 6:14 am, Sylvia Else <syl...@not.at.this.address> wrote:
>>>> My longserving SOLA 325 UPS suddenly quit yesterday.
>>>> Anyone have a sevice manual, or schematic, for this model?
>>> http://www.eserviceinfo.com/download.php?fileid=19986
>> Thanks, but that appears to be from the 305 model, which seems to be
>> different.
> 
> Uh, sorry ... not close enough ?

Seems to be different, though it's useful in showing the likely general 
configuration.

> 
>> In the mean, time I've discovered that the reason it's completely dead
>> even on battery is that the 40A fuse to the battery has blown.
>> Disconnecting the large transformer and shorting out the fuse allows the
>> display to light, go through its initialisation cycle, and then indicate
>> a fault.
> 
> I strongly suggest that you replace the fuse, because the
> unknown fault might make things worse, and you may
> blow up the whole unit ( which could solve the problem )
> 
>> The failure of the fuse wouldn't explain why the device won't run while
>> on mains power, so the fuse is presumably a symptom of something else.
> 
> Sure it is. Sorry I didn't  find the manual.
> 
> What is the error/fault message on the display ?

"UPS fault" indicated by a continuous beep from the unit.

Given the number of transformer leads that I have unplugged, this is 
hardly surprising.

Sylvia.

On Apr 25, 2:28 am, Sylvia Else <syl...@not.at.this.address> wrote:
> Jean-Christophe wrote:
> > On 24 avr, 15:42, Sylvia Else <syl...@not.at.this.address> wrote:
> >> Jean-Christophe wrote:
> >>> On Apr 24, 6:14 am, Sylvia Else <syl...@not.at.this.address> wrote:
> >>>> My longserving SOLA 325 UPS suddenly quit yesterday.
> >>>> Anyone have a sevice manual, or schematic, for this model?
> >>>http://www.eserviceinfo.com/download.php?fileid=19986
> >> Thanks, but that appears to be from the 305 model, which seems to be
> >> different.
>
> > Uh, sorry ... not close enough ?
>
> Seems to be different, though it's useful in showing the likely general
> configuration.
>
>
>
>
>
>
>
> >> In the mean, time I've discovered that the reason it's completely dead
> >> even on battery is that the 40A fuse to the battery has blown.
> >> Disconnecting the large transformer and shorting out the fuse allows the
> >> display to light, go through its initialisation cycle, and then indicate
> >> a fault.
>
> > I strongly suggest that you replace the fuse, because the
> > unknown fault might make things worse, and you may
> > blow up the whole unit ( which could solve the problem )
>
> >> The failure of the fuse wouldn't explain why the device won't run while
> >> on mains power, so the fuse is presumably a symptom of something else.
>
> > Sure it is. Sorry I didn't  find the manual.
>
> > What is the error/fault message on the display ?
>
> "UPS fault" indicated by a continuous beep from the unit.

Of course ... sounds a bit like Monty Python to me.

> Given the number of transformer leads that I have unplugged, this is
> hardly surprising.

Since you don't know the cause of the original failure,
are you sure I won't happend again ?

Did a short-circuit occur on the output(s) of this UPS ?

Jean-Christophe wrote:
> On Apr 25, 2:28 am, Sylvia Else <syl...@not.at.this.address> wrote:
>> Jean-Christophe wrote:
>>> On 24 avr, 15:42, Sylvia Else <syl...@not.at.this.address> wrote:
>>>> Jean-Christophe wrote:
>>>>> On Apr 24, 6:14 am, Sylvia Else <syl...@not.at.this.address> wrote:
>>>>>> My longserving SOLA 325 UPS suddenly quit yesterday.
>>>>>> Anyone have a sevice manual, or schematic, for this model?
>>>>> http://www.eserviceinfo.com/download.php?fileid=19986
>>>> Thanks, but that appears to be from the 305 model, which seems to be
>>>> different.
>>> Uh, sorry ... not close enough ?
>> Seems to be different, though it's useful in showing the likely general
>> configuration.
>>
>>
>>
>>
>>
>>
>>
>>>> In the mean, time I've discovered that the reason it's completely dead
>>>> even on battery is that the 40A fuse to the battery has blown.
>>>> Disconnecting the large transformer and shorting out the fuse allows the
>>>> display to light, go through its initialisation cycle, and then indicate
>>>> a fault.
>>> I strongly suggest that you replace the fuse, because the
>>> unknown fault might make things worse, and you may
>>> blow up the whole unit ( which could solve the problem )
>>>> The failure of the fuse wouldn't explain why the device won't run while
>>>> on mains power, so the fuse is presumably a symptom of something else.
>>> Sure it is. Sorry I didn't  find the manual.
>>> What is the error/fault message on the display ?
>> "UPS fault" indicated by a continuous beep from the unit.
> 
> Of course ... sounds a bit like Monty Python to me.
> 
>> Given the number of transformer leads that I have unplugged, this is
>> hardly surprising.
> 
> Since you don't know the cause of the original failure,
> are you sure I won't happend again ?

I've commented elsewhere in this thread that I've identified a couple of 
power switching FETs which are defective. One of them is shortcircuited, 
across all three terminals, which would certainly have blown the fuse.

Of course, that just pushes the question down a level - am I sure that 
whatever blew the FETs won't happen again. And of course, the answer has 
to be no.

These transistors only switch when the UPS is in backup mode. At other 
times, they're not switching, but their drains are connected to the 
secondary of a transformer that has mains applied to the primary. The 
failure could be attributed to a power spike, though I have to note that 
the UPS is plugged into a surge arrestor, and nothing else in the house 
seems to have suffered.

> 
> Did a short-circuit occur on the output(s) of this UPS ?
> 

No.

On Fri, 24 Apr 2009 15:14:30 +1000, Sylvia Else wrote:

> My longserving SOLA 325 UPS suddenly quit yesterday. Other than a relay
> that switches when power is supplied, it appears completely dead.
> 
> Anyone have a sevice manual, or schematic, for this model?
> 
> Or ideas? Normally, my first thought would be that its PSU had failed, but
> it has batteries as backup!
> 
Have you asked SOLA?

Good Luck!
Rich

On Sat, 25 Apr 2009 04:05:47 -0700 (PDT), Jean-Christophe
<5.d@free.fr> put finger to keyboard and composed:

>On Apr 25, 2:28�am, Sylvia Else <syl...@not.at.this.address> wrote:
>> Jean-Christophe wrote:
>> > On 24 avr, 15:42, Sylvia Else <syl...@not.at.this.address> wrote:
>> >> Jean-Christophe wrote:

>> > What is the error/fault message on the display ?
>>
>> "UPS fault" indicated by a continuous beep from the unit.
>
>Of course ... sounds a bit like Monty Python to me.

The OP could interrogate the UPS via its RS232 port using
HyperTerminal:
http://www.networkupstools.org/protocols/sola.html

Unfortunately the status information probably won't tell her anything
useful.

BTW, I would suggest that sci.electronics.repair is probably a better
newsgroup for this type of question than sci.electronics.design.

- Franc Zabkar
-- 
Please remove one 'i' from my address when replying by email.

Rich Grise wrote:
> On Fri, 24 Apr 2009 15:14:30 +1000, Sylvia Else wrote:
> 
>> My longserving SOLA 325 UPS suddenly quit yesterday. Other than a relay
>> that switches when power is supplied, it appears completely dead.
>>
>> Anyone have a sevice manual, or schematic, for this model?
>>
>> Or ideas? Normally, my first thought would be that its PSU had failed, but
>> it has batteries as backup!
>>
> Have you asked SOLA?

I've asked the company that took them over. I don't hold out much hope 
though. They don't really have an interest in helping people repair old 
gear.

Sylvia.