PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

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phanboy4
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by phanboy4 »

Thanks for this list, I recently obtained a 1954Q with some minor horizontal smearing, I'm gonna use this cap list and see if it helps.

Also added some replacement for the power board to the list. I'm hopeful that if I just get high quality caps the ripple current ratings won't be a big deal for power supply-adjacent caps ether.
dataDave
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by dataDave »

This is an awesome thread. Thanks so much! My 14M4DE is going to need a recap soon and it's good to know that this list is applicable.

Is there anything else we should be wary of besides the CRT discharge? How about the flyback? Does that get discharged at the same time as the CRT or must it be discharged separately?

Also, if anyone has any good tear down videos that would be grand. After studying the service manual schematics I'm non the wiser to being able to work out how to remove the A-board. A video, or perhaps series, on identifying problems, discharging and tearing down, recapping, and then rebuilding would be absolutely phenomenal.
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KatKya
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by KatKya »

I'm curious as to how well you think this cap kit list would apply to the 20M2MD and 14M2MD (and rebadged OEV203/OEV143 respectively.)
phanboy4
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by phanboy4 »

dataDave wrote:This is an awesome thread. Thanks so much! My 14M4DE is going to need a recap soon and it's good to know that this list is applicable.

Is there anything else we should be wary of besides the CRT discharge? How about the flyback? Does that get discharged at the same time as the CRT or must it be discharged separately?

Also, if anyone has any good tear down videos that would be grand. After studying the service manual schematics I'm non the wiser to being able to work out how to remove the A-board. A video, or perhaps series, on identifying problems, discharging and tearing down, recapping, and then rebuilding would be absolutely phenomenal.
The large caps on the power supply board can also be dangerous if you don't discharge them. I left my 1954Q unplugged for about 4 days and also shorted the leads of the big caps with wires attached to a light bulb socket to be safe.

Recapping the power supply board and the neckboard were easy, recapping the main board is proving to be tricky. Take lots of videos and pictures of stuff before you unscrew/desolder/disconnect/remove stuff.

Take this with a grain of salt though, I'm not done yet. It may not work at all when I reassemble it :D.

Other thoughts:

1. The cap list in the OP doesn't include caps for the 1954Q power board. I added those to my own list, I might post a complete list later.

2. I don't think the 1954Q is 1:1 with the 20M2U, because I ran out of 330um caps, and a few others here and there.
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mikejmoffitt
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by mikejmoffitt »

KatKya wrote:I'm curious as to how well you think this cap kit list would apply to the 20M2MD and 14M2MD (and rebadged OEV203/OEV143 respectively.)
The MD variants are virtually identical. At most a few signal area caps won't match.
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KatKya
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by KatKya »

That's what I've always assumed, but figured there's be at least a tweak here or there to meet stricter compliance standards.

Good to know, I've got two of the 20'' models that could probably do with a recap, and a 14'' I might do it to as well, but some other unsolvable issues it has might just make that a waste.
phanboy4
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by phanboy4 »

Does anyone happen to have a 1954Q service manual scan floating around? I can't seem to find one, and the 20M2U parts list deviates a little.

EDIT: Finished the recap, it looks pretty great, and it actually worked the first time I plugged it in! Took me about a month because I didn't know what I was doing, and was being super-careful. Managed to find a physical service manual for the 1954Q, which has the complete cap list, I need to scan and upload it.
SpiderWaffle
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by SpiderWaffle »

Someone shared this bit of knowledge:
"I was just talking to Pat on the phone today, actually. I asked about two monitors and this is what he told me:

Sony PVM 20L5: Replace 4.7µF 160v capacitors with 10µF 250V ones. The capacitors on the deflection circuit tend to go first.

Sony PVM 1342Q: The vertical circuit is the main trouble point. There are two different vertical circuits you could have, one with a 2.2µF 160v capacitor and one with a 1µF 160v capacitor. For the 2.2µF board replace it with a 4.7µF 160v. For the 1µF board replace it with a 2.2µF 160v. The other capacitors around them tend to go bad as well.

Sorry these aren't full sheets but this is what he told me."
Last edited by SpiderWaffle on Sat Nov 02, 2019 3:38 am, edited 1 time in total.
729
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by 729 »

Rezzing, but does anyone have any first hand experience on recapping a 20L5? Having a parts list or a lead on what to get would be helpful.
Shredpirate
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by Shredpirate »

mikejmoffitt wrote:Shit, the shopping list is gone now. Not sure what happened to it.
Any chance you still have the cap list for 14M2? Nice to see someone from San Jose, CA as well.
hbardaxc
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by hbardaxc »

Thanks for the list; it's super convenient. I'm in the middle of doing a 14M2 recap and I ran out of the 47UF / 25V like flamie666 did. I need to count how many extra are needed later but it's probably like 10-15. I just ordered 20 extra without counting and I'll get em later. I glanced over this but for a 20M4 this guy ended up ordering like 44 total:

https://www.retrogameboards.com/t/honey ... -log/852/3
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mikejmoffitt
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by mikejmoffitt »

I probably didn't notice because I ordered 2-3 kits. It might be better to consider the list a general guideline of "these are caps you should keep on hand if you work on PVMs a lot".
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rocko_modern
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by rocko_modern »

flamie666 wrote:I'm right now in the process of changing the caps (tedious task...). I bought mikejmoffitt's list, only had to change some caps that weren't available at the time. I have 2 14M2U so I bought the kit x2. I have some geometry issues in one and the other is a bit blurry too, so I will post my findings when I finish one.
Thanks for the cap list.
Does your PVM 14m2u have a black box with orange epoxy (not sure what this part is called in the 20ms) connected to the flyback transformer? I recently purchased a 14m2u and was wanting to recap it due to massive geometry issues but wanted to make sure it wasnt missing this part before i invest the cash in recapping it.

part i'm asking about is pictured in bottom left.
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oggie
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by oggie »

I could really use that digikey list for my 14m4u.

Anyone have it?
oggie
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by oggie »

Strange. The digikey link works now...
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mikejmoffitt
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by mikejmoffitt »

I went over a 1954Q recently and made capacitor replacement notes, so I will likely draw up a new Digikey list (and make sure they are all high-temp / life capacitors).
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thebeautifulones
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by thebeautifulones »

SpiderWaffle wrote:Anyone have PVM-14L5 and 20L5 recommendations on recapping?

This is most of the info from Pat that's been shared to the community so far, F and D 20 recap lists:
(let me know if you want to access to add more to this sheet, trying to get a good archive here)
https://docs.google.com/spreadsheets/d/ ... sp=sharing

Someone shared this bit of knowledge:
"I was just talking to Pat on the phone today, actually. I asked about two monitors and this is what he told me:

Sony PVM 20L5: Replace 4.7µF 160v capacitors with 10µF 250V ones. The capacitors on the deflection circuit tend to go first.

Sony PVM 1342Q: The vertical circuit is the main trouble point. There are two different vertical circuits you could have, one with a 2.2µF 160v capacitor and one with a 1µF 160v capacitor. For the 2.2µF board replace it with a 4.7µF 160v. For the 1µF board replace it with a 2.2µF 160v. The other capacitors around them tend to go bad as well.

Sorry these aren't full sheets but this is what he told me."
The service manual only shows one 160v capacitor, and it's listed as 33MF (uF).
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Diopter Doctor
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by Diopter Doctor »

Spoiler
mikejmoffitt wrote:I took apart my PVM 20M2U and made an exhaustive capacitor list, and successfully re-capped it with success. I also re-capped a 1354Q with the same list, without any mismatches.

This covers the "A" board, and the CRT Neck board (I think the "C" board?)

Here's a digikey shopping cart list: http://www.digikey.com/short/3b0fcr
Question 1: Just curious how you decided what brand and what series for each one you selected on your Digikey cart list.

Were you looking for low ESR? Or whatever is cheapest of the high tier brands?

Question 2: Why did you replace every 100uF (10V, 16V, 25V) cap with 1000uF instead?

I'm in the middle of recapping my 20M2U and all the original caps from 1997 were Nichicon, Rubycon, and Chemi-con KMG. All high tier brands of course.
BVM-PVM
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by BVM-PVM »

Anyone have a capacitor list for a pvm 1954q?
jjona5
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by jjona5 »

I just want to make sure I'm right after reading this. The 1354Q uses the exact same caps as the 20m2u shopping list you have posted? I just want to make sure before I order 2x of that shopping cart(I have two 1354q monitors to recap).

Thanks in advance for making the list!!!


VM 20M2U and made an exhaustive capacitor list, and successfully re-capped it with success. I also re-capped a 1354Q with the same list, without any mismatches.

This covers the "A" board, and the CRT Neck board (I think the "C" board?)
729
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by 729 »

Caplist for 14/20L5?
shano
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by shano »

Hey guys i have a 2054QM is the 1954Q the same as the 2054QM? and am i good to use this cap kit for it?

Also my PVM has smearing usually on bright white from what i notice and the underscan button and composite line button dont like to work when pressed (sometimes the underscan button will change other modes though) would changing the caps fix these issues?
thomashenry
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by thomashenry »

I also have a PVM2054Q. Mine powers on but there is no picture at all. The tube seems like it's getting nothing. I think the PSU board will need recapping? Has anyone got a componet list for that board?
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ecarrilho
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by ecarrilho »

BVM-PVM wrote:Anyone have a capacitor list for a pvm 1954q?
I'm looking for this list, too...
welshwuff
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by welshwuff »

Would this list be compatible to a 14n2?
jeffez
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by jeffez »

Is this the sort of geometry problem new caps might fix?

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TheRetromancer
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by TheRetromancer »

Would it be possible for someone to post a high-resolution of the underside of the PVM-20M2U A board, specifically near IC507? I've caused some damage to a point, and its obscuring where it needs to be connected.
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Leoraider
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by Leoraider »

shano wrote:Hey guys i have a 2054QM is the 1954Q the same as the 2054QM? and am i good to use this cap kit for it?

Also my PVM has smearing usually on bright white from what i notice and the underscan button and composite line button dont like to work when pressed (sometimes the underscan button will change other modes though) would changing the caps fix these issues?
Hey I have ten units of 2054qm, yes they are the same of 1954 (released in USA) all my units have bright picture, high contrast and a Perfect White but all have a little streacking of brightest objects on grey backgrounds to the right. I have already recapped one and got a Perfect geometry and improved picture quality but not solved the smearing/streacking wich is barely visibile.
eccoboy
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by eccoboy »

TheRetromancer wrote:Would it be possible for someone to post a high-resolution of the underside of the PVM-20M2U A board, specifically near IC507? I've caused some damage to a point, and its obscuring where it needs to be connected.
You should check the schematic in the service manual. I might have a photo of the board from a 20M4U.
TheRetromancer
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Re: PVM 20M2/14M2/20M4/14M4/1954Q/1354Q cap kit list

Post by TheRetromancer »

eccoboy wrote:
TheRetromancer wrote:Would it be possible for someone to post a high-resolution of the underside of the PVM-20M2U A board, specifically near IC507? I've caused some damage to a point, and its obscuring where it needs to be connected.
You should check the schematic in the service manual. I might have a photo of the board from a 20M4U.
I've done so, but while continuity seems to be fine, I have a strange kind of separation on the topmost area of the screen that wasn't there before a recap, and that damaged area is the only thing I can determine that is not normal.
"Thanks for the nice reply. I do offer to do work without hot glue too if people prefer it that way." - Drakon
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