Any assistance diagnosising issue with not functioning Durst 1200 / 501 colorhead? Extremely dim light output

[legstowalkmyself]

When I plugged the enlarger into the power supply and that into the wall outlet, the enlarger light is extremely dim and is very orangish. First thing I did was change out the power supply with another one same issue. Then I changed the bulb, same issue. I switched bulbs and power supply from my other durst 1200 enlarger that's works just fine and same issue. I cant seem to figure out the issue at all.

 

[Carnie Bob]

Check the mixing box somtimes the walls fall inward and need to be reinstalled.

 

[legstowalkmyself]

Check the mixing box somtimes the walls fall inward and need to be reinstalled.

I check it without the box and still not functioning like normal ):

 

[MARTIE]

How are the contacts in the ceramic bulb holder, perhaps they need a clean?

 

[MARTIE]

I'd remove everything from the light path and just check the bare bulb projection coming straight out of the enlarger head.

I believe it's also possible to test all of the filters, to see if they physically swing in and out of the light path. Also test the arm on the lefthand side of the head. You may have to do this by shining a torch down the shaft where the bulb would naturally be seated.

 

[MARTIE]

If I understand correctly, you've already checked and concluded that the power supply, cables, bulbs and boxes all work as intended on your 2nd L1200?
Therefore the remaining factor can only be the head.
The most common error tends to be the ceramic bulb connector and contacts.

 

[pentaxuser]

Try testing the colour dials by swinging out the YMC dials or reducing to all 3 to 0 to see if one or more of the filters is sticking. I'd also check that each dial works proportionately in line with what the dial says

pentaxuser

 

[koraks]

Try testing the colour dials by swinging out the YMC dials or reducing to all 3 to 0 to see if one or more of the filters is sticking.

Good advice, the filters are also the first thing I'd check esp. given what he says here:

the enlarger light is extremely dim and is very orangish.

This suggests to me that the Y and/or M filters might be stuck in a fully engaged position.
Also verify the neutral density filter!

 

[mshchem]

Confirm lamp is bright #1

Flux capacitor

 

[Ibicus]

 

[Ibicus]

Did you check the additional filter?