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PVM 2130QM flyback

Posted: November 29th, 2019, 6:27 pm
by mukurop
I have received the HR 6415 wich is what HR Diemen supply as replacement for sony 1-439-372-32 (PVM 2130qm) but The HR one have the scrren pot on the flyback otherwise the genuine one not because on 2130qm the screen pot is located on the neck board.
Have any of you tried to install one of these HR flybacks on a PVM? Do you have any advice?

Re: PVM 2130QM flyback

Posted: November 30th, 2019, 10:05 am
by PrincessPrinPrin
The upper pot must be focus and I think that was present on the original flyback too. The lower one looks just an empty hole to me. The question is why does it have a third wire when you only expect two? Check resistance across the black and white wires with a meter that supports at least 200Mohm.

Re: PVM 2130QM flyback

Posted: November 30th, 2019, 12:43 pm
by nem
PrincessPrinPrin wrote:
November 30th, 2019, 10:05 am
The question is why does it have a third wire when you only expect two?
Isn't that just the wire for the anode? It starts white and then turns red after a while. No idea why.

Re: PVM 2130QM flyback

Posted: November 30th, 2019, 1:12 pm
by PrincessPrinPrin
You are right. There are only two wires coming out of the flyback. This visual shows where the white wire becomes red with some sleeve covering the joint:

https://www.donberg-electronics.com/pics/h/hr_6415.jpg
(it also shows the empty hole for thwe G2 wire)

The pinout of the HR doesn't completely match the original though. The B+ is on pin 4 on the HR and on pin 5 on the original. Not optimal, may result in ringing (organ pipes aka jailbars). A mod may be required.

Re: PVM 2130QM flyback

Posted: November 30th, 2019, 5:42 pm
by mukurop
First of all Thank you so much for helping me. And yes there is not screen wire but the depressed pot appear just like a working one, the most waries are for the pinout.. Surely the HR 6415 is direct swap for the Sony 1-439-372-13 used in a lot of 25-27" trinitron tvs, 2130qm have this one 1-439-372-32 from hr diemen the replacement is the same hr6415.
While I'm tempted to try it, I'm afraid of damaging something

Re: PVM 2130QM flyback

Posted: November 30th, 2019, 6:42 pm
by PrincessPrinPrin
The G2 voltage on this monitor is not EHT-derived. The source is the HOT collector which is about 1000Vpp. This voltage is rectified to DC and the 1000VDC is sent to the neckboard where you have the adjusting pot. Pretty much all Sony displays of that time including TVs were like that. As for the pinout I don't think you're going to do any damage but the picture may have the defects I mentioned above. It shouldn't be hard to modify the traces around the flyback to send the B+ to pin 4.

Re: PVM 2130QM flyback

Posted: November 30th, 2019, 7:04 pm
by mukurop
I see, so the B+ pin seems out of place but I do not have the slightest intention of giving up I'll study the circuit well and see if I can do something.

Re: PVM 2130QM flyback

Posted: December 1st, 2019, 10:35 am
by PrincessPrinPrin
What's the issue with this monitor? Are you sure it's the flyback and not something else?

Anyway I would do it like this. The first time I would disconnect the 200V wire from the neckboard to see if the voltage is correct:
2130.jpg

Re: PVM 2130QM flyback

Posted: December 2nd, 2019, 3:15 am
by mukurop
Thanks for your advice!
This pvm works great! It have an awesome White and colors I have already recqpped the psu and some caps on deflection area (D board) wich was startiing to alter they esr value and now its geometry its Perfect , I want replace the flyback just because it is a bit noisy but still works.
Despite its age, the tube is in perfect condition, really I set the contrast at half and the white still so great! It is better than my 2054qm wich is good too!

Re: PVM 2130QM flyback

Posted: December 2nd, 2019, 10:23 am
by nem
What do you mean it's noisy? Do you mean interference in the screen or actual audible noise?

If it's the latter, are you sure it's the flyback making the noise?

Personally I would never replace the original flyback out of these unless it was faulty.

Re: PVM 2130QM flyback

Posted: December 2nd, 2019, 1:27 pm
by mukurop
Non problem on screen, just audible noise.

Re: PVM 2130QM flyback

Posted: December 3rd, 2019, 5:55 pm
by mukurop
May i know your opinion ebout this one? https://www.ebay.com.au/itm/Sony-1-439- ... 100623.m-1

Re: PVM 2130QM flyback

Posted: December 4th, 2019, 12:59 am
by grantspain
i use that company for some of my flybacks and they are very good quality

Re: PVM 2130QM flyback

Posted: December 4th, 2019, 8:37 am
by PrincessPrinPrin
mukurop wrote:
December 3rd, 2019, 5:55 pm
May i know your opinion ebout this one? https://www.ebay.com.au/itm/Sony-1-439- ... 100623.m-1
No idea if it's electrically compatible. All I can say is that unlike the HR replacement it doesn't have the focus wire built in so it's like the original flyback. With the HR you would need to desolder the socket, open it, desolder the old wire and solder the new one.

Re: PVM 2130QM flyback

Posted: December 4th, 2019, 1:45 pm
by mukurop
PrincessPrinPrin wrote:
December 4th, 2019, 8:37 am
mukurop wrote:
December 3rd, 2019, 5:55 pm
May i know your opinion ebout this one? https://www.ebay.com.au/itm/Sony-1-439- ... 100623.m-1
No idea if it's electrically compatible. All I can say is that unlike the HR replacement it doesn't have the focus wire built in so it's like the original flyback. With the HR you would need to desolder the socket, open it, desolder the old wire and solder the new one.
Thanks Princess and Grant you are the Masters, I will go haed and buy this from ebay then will reroprt Here.

Re: PVM 2130QM flyback

Posted: January 10th, 2020, 7:35 am
by Justez
mukurop wrote:
December 3rd, 2019, 5:55 pm
Thanks Princess and Grant you are the Masters, I will go haed and buy this from ebay then will reroprt Here.
Hi
You were able to finally get the flyback installed?
You had to bypass a track to install it and change pin 4 to 5, or you installed it with the new pin configuration of HR DIEMEN?

Re: PVM 2130QM flyback

Posted: January 10th, 2020, 1:35 pm
by mukurop
Purcheased a new flyback from ebay, it is genuine Sony with a different code label: 1-439-372-13 and this one works flawlessly!