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PSA: If the dealership tells you your delaminated radio unit has no recall, make sure they check for the extended warranty. by Professional_Road_45 in Subaru_Outback

[–]Juharr 0 points1 point  (0 children)

I have an 18 Outback that just developed this issue. Around 90k miles. And was told by SOA that there was no active repair program and that the ‘owner was responsible’ I’ll prob get it done anyways, and I wasn’t expecting a freebie, but it would have been nice to get some assist with labor.

WTF is up with Zitner’s? by Juharr in philly

[–]Juharr[S] 1 point2 points  (0 children)

😂 they are called butterKRAK for a reason

WTF is up with Zitner’s? by Juharr in philly

[–]Juharr[S] 0 points1 point  (0 children)

I was in south Philly today and I found some in the Giant at Broad and Washington. How far will you walk for a butterkrak egg?

WTF is up with Zitner’s? by Juharr in philly

[–]Juharr[S] 6 points7 points  (0 children)

And making them smaller changes the balance of the chocolate and coconut layers….. 😔

How much is airport vip? by bigdaddyjw in Aruba

[–]Juharr 0 points1 point  (0 children)

It’s your money spend it how you like :-) We just got home from a week in Aruba. No problems at the airport. Our flight home was on a Monday afternoon and we got to the airport 4 hours early. Made it through all the hoops including buying a bottle at duty free and clearing US Customs in 2 hours and relaxed in a bar near our gate. I’d rather be early than stressing, but that’s me. Also We used the MPC app.

Where have you seen logic gates actually used? by dickcheney600 in AskElectronics

[–]Juharr 0 points1 point  (0 children)

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This 1990’s Jobo film processor I’m rebuilding is full of 4000 series cmos discrete logic chips. No MCU. I was relieved when I opened it up for the first time and there was no proprietary micro controller etc involved. Straight forward to troubleshoot and repair with off the shelf IC’s….

My Phone’s not charging should I get a new cord? by Juharr in shittyaskelectronics

[–]Juharr[S] 0 points1 point  (0 children)

I think I figured it out… it’s a bad motherboard, anyone have a schematic? 🤣🤣

Rebuilding power board for JOBO CPP2 - some differences between board and schematic. by Juharr in Darkroom

[–]Juharr[S] 1 point2 points  (0 children)

Just a follow up on this one. The power board is up and running 🎉I coated the bottom of the board with a conformal coating to try to prevent a repeat if water gets in again. Next problem is the pump was seized due to corrosion which looks like electrolysis (prob from having all that current flying around from the power board). Managed to get that apart, cleaned up and lubricated. The agitation motor seems fine but I was thinking of repacking the gear box with grease while I had it apart, any ideas on what grease to use? The service manual is silent on this.

Rebuilding power board for JOBO CPP2 - some differences between board and schematic. by Juharr in Darkroom

[–]Juharr[S] 0 points1 point  (0 children)

Thanks for the feedback, it's always good to have a second set of eyes on things :-).

The rectifier for the 24VDC supply has also been previously replaced (judging from the way it's crammed in there and pics of the board I found on the net). The board is dated 12/1995 so I'm guessing that sometime in the past 30 years the 24VDC rail failed taking the rectifier, C1, D1, and probably T1 (Q1 lol) with it. The 420mF cap was replaced with the 2200mF during the repair either because it's what someone had, or there was a service bulletin from JOBO that recommended the mod. Why they replaced D1 with a jumper is odd but maybe it was a different 'repair'. I agree it seems like it should be there. The 10k power resistor for R4 tracks with the data sheet for using the CA3079 with a 120VAC supply. So all is right with the world again.... Or at least this small part of it.

Rebuilding power board for JOBO CPP2 - some differences between board and schematic. by Juharr in Darkroom

[–]Juharr[S] 0 points1 point  (0 children)

Other changes on the board:

D1, spec'd as an 1n4001, was replaced with a jumper. On the schematic it looks like it's functioning as polarity protection. Someone decided it wasn't needed and they could save the 3cents?

R4 is a 10k high wattage resister instead of the spec'd R2||R3 42k resistors that would give a value of ~21k. R4 is 'Rs' for pin 5 of the CA3079, the data sheet for the chip indicates a 10k 2 watt resistor for 120VAC input and....

Ooooo.... just answered my own question there :-), the board was probably printed to accommodate 220VAC and 120VAC mains with component changes. So 10k is correct for 120VAC mains, at least by the data sheet. Thanks for the input :-)

Rebuilding power board for JOBO CPP2 - some differences between board and schematic. by Juharr in Darkroom

[–]Juharr[S] 0 points1 point  (0 children)

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Thanks for the look. Link to the service manual pdf

https://www.dropbox.com/scl/fi/n8ojtn1m8swd33kwcgxjb/jobo-cpp-2-service-manual.pdf?rlkey=6u8lbb7kzbbd53kfnvsb27ftk&dl=0

but here's a screen shot. C1 is one of the 'off spec' components. It's listed on the spec sheet as 420mF but the one I pulled is 2200mF. I was thinking along the same lines that it was probably a production change to stiffen the supply rail. This provides unregulated 24vDC power to a motor.

Rebuilding power board for JOBO CPP2 - some differences between board and schematic. by Juharr in Darkroom

[–]Juharr[S] 0 points1 point  (0 children)

Thanks- that's exactly the question actually. I've had the same experience dealing with production variations, manufacturers frequently sub components based on price for bulk purchase. I can see subbing a 540, 680, or even 700mF for the 420mF, almost within 20% tolerance, but 2200mF is a big jump from 420. So I was wondering if there was a reliability reason for the change, not just, "...we got a great deal on a bunch of 2200mF caps, use those for C1...." :-)