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So parallel 2 supplies at 15.2v and the load share is not working. Pin 5 connected and only one supply led is coming on when loads increase. You can turn the supplies on at 200a load and they run happily and the second one stays online.

I run Hobby Lipo Chargers,I was Wondering if i put 60amp load will it trip?

If u want to use 2 psu in parallel just connect them at pin 34?

Must upgrade capacitors to more than 16v

whats the current draw on this amp with 2" transformers???

What pad is for load sharing

Mine not starting up with a bridge of pins.. hoping it is fixed with 380ohm resister getting one tomorrow.

To have 13,8v you must have 6,8K resistances on both side. I just have tested that configuration

Hello Greetings!! What are the models of the resistors you installed...

Need help. What size resistor do I need? 1/4 watts or 1 watts for the 12k resistor and 4.3k resistor? Or it doesn’t matter the wattage?

Is it possible to decrease the voltage to 10V?

Just a FYI when doing this mod, double check your soldering connections on the resistor leads on both the variable pcb board and on the OVP board! I didn't have one end of the resistor soldered good to the SOT transistor leg, on the OVP board, it came loose when I put the rubber pad up against the PCB and didn't know it. Powered up the PS and fan reved out big time and blew out some component. Still powers on but no green light or output voltage. It's trash now. Just wanted to let everyone know.

I need to around 13.8V to 14.4V so a 5.6K on the variable board and a 6.2K on the OVP?

Thanks, 1/4w 6.8k for voltage control 13.4v - 14.4v. For OVP I used 8.2k and supply set to 14.2v. Already tested on my BMW e60, on 60amp load voltage down to 13.9 volts. Used for 2 hours programming session, work like a charm. Thanks again.

I'd love a full video or hell even just a comment on how you identified the OVP circuit. I created the first YT vid on how to get this PSU to turn on, there was not a single page on the internet with any info, I basically messed around with the PSU for an evening, probing and taking notes, noticed the shorter pin traces on the end and assumed they might have something to do with turning it on because you would want all other pins connected first before "activating" it, but I admit I tired a few different pins together with high impedance resistors before I had it 100% figured out. But, to find where the OVP circuit is and how it works and then actually modify it, I had no clue. I'm very grateful for your video, I used to run mine at 14v but with a load it would sag to 13.4ish, now I have it set to 15v, and I have another volt if I want to use it! Brilliant! I really love this psu, they are tiny and super quiet too!

anyone have knowledge about delta dps 800ab 40c please help me

tks DIY ideas.i am done.out put 15.48v 14:56

Apa kamu bisa menurunkan atau menaikan tegangan delta electronic type DPS 800-QB A apakah kamu punya video merakitnya ?

How much for a 2or 4 pill heater plz hit me back

Is there any info on running 2 in series? I had it working for a bit but ovp was actually still on on one of them once I fixed it… once I connect to load (29.2v 300ah battery) they both turn off same time. One isolated from ground. And I did have them working at 14.7v each but with a horrible sound from the ovp. Now nothing once I fixed the ovp

Hi! Anybody tell me which resistors for voltage 14.5v? Thank you!

Why no new video Nate ?

How does this compare to the typical dps1200, any draw backs?

My test of this PSU's modified OVP triggering over a range of resistances, voltages & (light)loads has been uploaded to the EEVBlog thread titled "HP HSTNS-PD43 PSU Hack & Feedback Circuit (Partial)" - 3rd post down. Can't link here as this comment would get (automatically?) deleted. If interested in how the OVP behaves, check it out (e.g. OVP is disabled for resistances of 10k and below, whereas to keep OVP active to trigger at around 15.40~15.50V without changing the output caps, the optimum resistance is in the range of 10.50k~10.60k). For more details search the thread mentioned above. Cheers...

how to do that on HSTNS-PF43

What was the wattage of the resistor 1watt With 6.2 K.??

Hi. By any chance, do you have a user guide for modding HSTNS-PL14?

Hi. By any chance, do you have a user guide for modding the HSTNS-PL14?

Great video, what temperature do i need my solder to be? I cannot get anything to stick, specially the small board…

Below are tested resistor values for output voltages 12.66V ~ 15.50V. { Resistor Values Are As Tested Without Rounding} 12.66V - 100.1k~103.5k 12.75V - 80.1k 12.80V - 71.0k 12.89V - 59.83k 13.00V - 50.63k 13.10V - 44.20k 13.20V - 39.09k 13.30V - 35.09k 13.40V - 31.82k 13.50V - 29.23k 13.60V - 26.92k 13.70V - 24.99k 13.80V - 23.36k 13.90V - 21.95k 14.00V - 20.64k 14.10V - 19.46k 14.20V - 18.43k 14.30V - 17.48k 14.40V - 16.62k 14.50V - 15.87k 14.60V - 15.20k 14.70V - 14.54k 14.80V - 14.01k 14.90V - 13.46k 15.00V - 12.91k~12.98k 15.10V - 12.45k 15.20V - 12.05k 15.30V - 11.64k 15.40V - 11.27k 15.50V - 10.68k Note: The reason I went through this range is because I'll be using this during automotive ECU programming to keep the battery charged up. I'll utilize a 100k multi-turn pot so I can adjust the output voltage from 12.8V up to 14.6V as necessary, much like how a car battery charger gradually increases its output voltage during the initial minute or two of charging. Cheers~ * Regarding OVP triggering: For triggering say at around 15.00V(+/- 0.5V?), OVP starts kicking in between resistance values of 11k~12k and up. BUT... the triggering is not just based on voltage, it is also dependent on current/voltage drop(i.e. at certain voltages, OVP does not trigger at say 2A loads, but will trigger at higher loads say 4A, 6A, ... etc.) so to get a clear picture of the spread of this "grey zone"(in which small loads don't trigger OVP, but larger loads do) it will likely be necessary to make a graph based on methodical testing of not only multiple voltages but multiple current/loads for each OVP hack resistance value under test, and test over a range of resistance values. I'll try to make such graph via an Excel sheet perhaps and upload on EEVBlog and update here when it's done. ** Update: The preliminary OVP triggering tests are done and uploaded to the EEVBlog thread titled "HP HSTNS-PD43 PSU Hack & Feedback Circuit (Partial)" - 3rd post down. Can't link here as this comment would get (automatically?) deleted. If interested in how the OVP behaves, check it out (e.g. OVP is disabled for resistances of 10k and below, whereas to keep OVP active to trigger at around 15.40~15.50V without changing the output caps, the optimum resistance is in the range of 10.50k~10.60k). For more details search the thread mentioned above. Cheers...)

Hello Anybody know, is it possible to mod hstns-pf43?

Thanks, It works! My values: I wanted 14.4v for vehicle programming, For OVP board, I used 2 x 1/4w 6k resistors in series to get 12k. For the voltage output pot resistor, I used a 10k resistor instead of the 5.6k resistor. This gave me a voltage variation of 12.8 to above 16v! I was surprised to see it hit 16.4v briefly, but thankfully it didnt damage the outout capacitors which are only rated to 16v. After tweaking the 10k pot down the output is steady at 14.4v. I'll make a short video of my mod if anyones interested. Thanks for the video!

The voltage mod works fine but the crowbar does not.. I have spent four hours on three supplies... With 18k across the voltage. I get a nice range centered abour 14v...Go to 14.08v and the crowbar trips the supply with no crowbar resistor mod... No matter what resistance value I apply in the suggested location be it high or low the supply will happlily produce any voltage and no ovp kicks in.... 😢

Sir, do you have some advice on how I can find the volt share pin so I can probe around and find it myself on my flex slot PSU, it would be super appreciated if you would share how you identified it! And do those pins get connected in parallel between units? Finding official documentation on these PSUs is impossible. I bought the DPS-1400BB flex slot PSU and figured out how to turn it on and also increase the output voltage before there was any online guide whatsoever, so I uploaded a vid on how to do it on my channel. This vid will certainly help me to disable the OVP on my unit so I can get over 14.5v and Ill make a new video on that. 👍 Thanks buddy!

Put bias on that thing make a real amp

Excellent, works a treat. Also used 22k and 6.8k for 13.7V. Worth pointing out that you need a good soldering iron with a fine tip, also as someone else has said decent magnification to see what you're doing. Took me a couple of attempts to make the top joint of the 6.8k, 1st time I shorted it to the plated through hole below (before using a magnifier) and although it fired up and lit a 12v lamp the voltage collapsed when put under a real load. Came back to life when I stripped it back so seems quite resilient! All done now, so thanks again!

pd-29 please help up too 14.5v

How much on it

Finally completed probing & tracing out this PSU's side(auxiliary) PCB into a schematic. It is uploaded on EEVBlog ["HP HSTNS-PD43 PSU Hack & Feedback Circuit (Partial)"]. Any comments or answers to the questions in the thread would be appreciated in the EEVBlog thread or here. Thanks again... Cheers~

hi, is there any possibility to limit the current at the level of 50Amps?

Hello, is there any way to limit the current, e.g. to 75A?

I want link video adjust current 😊, thanks you!

At what voltage does the OVP shut the PSU down?

Thank you for this video, I needed a power supply for maintaining vehicle voltage above 13.5v with the ignition off. Used the 5.1k and 5.6k and was able to get it dialed in to 14.46v. full clockwise was below 14, and full counterclockwise was at least 15. I do not have a steady hand at all, so soldering was tricky for me, but I covered the area around the solder points with kapton tape and it worked great.

How to get in contact with you

Mr. HOPPER, what is the price for one of those I like it?

The 3.3k and 5.1k are working like a champ with the supply set to 14.9v. Nice to see how to mod these as the DPS-1200SBA supplies are getting harder to find (cheap) and these are plentiful.

Very usefull video, thank you!

Hi, this is a very good method for such supply as I have applied same method but supply is being shut down on applying a little load from out put so plz must guide for fix it

Hi, I see you are a model HSTNS-PD41 also a mod. Is it the same control board? Thank you. Greetings from Slovenia