HL Durst 2501 AF reset

[jeroenfoto]

hi
We have a durst 2501 AF horizontal
i found the manual but starting up seems a problem (first time startup) have a lens and there is neg in the carrier.
is there a way to reset the unit
when i put the power on
the light is already on and everything is frozen
tekst line AF Filter Setup
and 007 and 011 and 012 are red on
do you know how to start up or reset
thanks jeroen

 

[AgX]

Welcome to Apug!

Have you tried "001 Start" ?

 

[jeroenfoto]

Yes and none off the keys are working only the red ones are on
see pictures first post

 

[AgX]

Pulling the mains connector, waiting and plugging in again?

 

[jeroenfoto]

yes we did
it several times but it boots up as the pictures shows

 

[koraks]

This piece of equipment relies on fairly complex (mostly) discrete electronics with especially the capacitors being a source of trouble. It's fairly likely that some have degraded, making the control electronics unstable/inoperable. Which, evidently, is very bad news. Some knowledge of electronics and a donor machine would come in handy at this point...

 

[jeroenfoto]

thanks for youre reply
i have found a operator who s been working with the enlarger
will post updates

 

[koraks]

Yeah, someone with experience with this device can certainly be helpful.
The problem is mainly that this piece of equipment is based on 1980s era electronics design and components from that same era, which makes for the nasty combination of relatively complex electronics (often using hybrid analog-digital solutions for things such as pwm control, using analog oscillator circuitry which is sensitive to component degradation) and capacitors that just have a finite lifespan. Getting this to work may require a schematic, soldering iron and a healthy dose of patience & perseverance.

 

[jeroenfoto]

I only have the usermanual/operation does anyone has more detailed
electric scheme of HL 2501 AF

 

[Marcin1974]

Hi, sorry my question is not entirely in line but I have the option to buy exactly the same model as yours (Durst HL 2501 AF). What will the fair price be? I am asking because I want to prepare for this purchase. Thanks in advance for your reply. Regards. Marcin