12-20-2022, 05:37 PM
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Free Member
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Join Date: Dec 2012
Location: Colorado, USA
Posts: 52
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Now it's my turn to contribute a little bit to this community.
I've got an AG-5710p. I have service manuals for both the 5710 and 1980.
I've done a BIG pile of research: - cap replacement recommendations from Panasonic over the last 25 years.
- Downloaded a ton of PDF files on that, plus
- several current catalogs
- cap availability and specs at digikey and mouser
- created cross reference spreadsheets for a lot of this
- validated via visual examination of caps and CBA's on my 5710
Attached is a multi-tab spreasheet with a lot of hopefully-helpful info: - CBA list and ID's for 1980p and 5710, and how they correlate (or not)
- Cap list for both, how they correlate, Schematic C## values, CBA "series" (base Cnnn number) and marking Cnn numbers, and combined... all validated and cross correlated for 1980 and 5710
- Conversion from original Cap part numbers to current cap P/N's, then further to actual available cap's at both digikey and mouser (as of Dec 2022.)
- I just ordered a complete set of caps from Digikey. A little over US$70 including tax and shipping. (Mouser has NO stock and NO substitute at all for one cap
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A few notes and additional hints.- Documented cap C#### is always a combination of two numbers:
- The CBA printed cap # (usually a short number like C1-C99)
- The CBA "series" base number, usually in the thousands, like C4800, C1000, etc.
- Some CBA's have a single series for the whole board
- Some CBA's, including the main board, have several physical sections
- NOTE that some caps are actually on the back side. These are always some kind of later engineering change and not well documented

- Panasonic has made MANY changes since these VCR's were made
- Whole series of caps have been updated to new series. Sometimes multiple version changes. Not easy to just convert from old to new
- More recently, they simply dropped manufacturing of ALL low capacitance 'lytic caps. There are no Panasonic 'lytic caps below 1 uF anymore.
Digikey and Mouser are both good vendors with interesting tools, but quite different. At this point I generally prefer Digikey tools.
(Note: you need to create a free account on each to use the tools I'll discuss)
Mouser: - General part search is pretty nice: for each attribute you can select a value, OR select value then choose ">=" or "<="... so it's easy to say "16 volts OR MORE" for example.

- You can create a text file with part-number|myID|quantity rows, upload into the "Project Manager" as a "BOM" (then sort on myID to keep your own order, kinda) and see availability and cost of all parts at once
- You can add additional parts to a project
- You can NOT edit an existing part however. Easier to edit locally and upload a new set

- NOT always easy to find substitute parts for those unavailable... but there IS one good tool: once looking at a part, scroll down. There's a checkable list of attributes, then they will search for all parts that match. BUT it's not as flexible as their general part search...
- If a part is not available in stock, they don't suggest alternatives.
Digikey - General part search is similarly nice
- For any given part, if not in stock there's a link to show suggested substitutions. Mostly nice.
- You can upload a list with "partNumber Quantity" rows. That becomes a list. Quick availability and cost of the whole pile.
- Easy to add parts to list, and to edit parts.
- Easy to both keep your desired part number, and add alternates (this is how part of my spreadsheet was made: the theoretical "correct" p/n, and separately which p/n I actually chose
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- Overall, I found it relatively quick to edit my list of over 50 p/n's and turn it into a list of actually available parts. Nice.
NOTES on attached XLS file- CAPS tab is currently in P/N order (then sorted by CBA and Cnn)
- P/N tab highlights parts at DigiKey and Mouser whose available p/n was different from what is supposedly "ideal".
- If you examine the formulae behind the columns for Series, cV and cCap (code for Volts, code for Cap) etc, you can see how Panasonic P/N's break down into various component parts
- I did NOT pull in the cap diameters. That would have been a Good Thing. Maybe someone else can add that.
- There are one or two remaining anomalies. I'm waiting for a message back from Panasonic to resolve one key question... but I went ahead and ordered caps anyway

Here are additional PDF files I collected, possibly helpful - AG-5710 Service Manual 1998. ALSO includes K-mech service/adjustment manual at the end (around p120?) (obviously scanned at not-perfect quality. Sorry
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- Several key Panasonic part discontinuation notices
- Documentation of Pan SMD caps, all series.
One last hint: to create an uploadable part list usable at Digikey, - make a column in the P/N tab (AFTER the quantity col!)
- say "DK list" in row 1
- type this into row 2: =CONCATENATE(D2," ",F2)
- copy that to the rest of the rows
- now copy the whole shebang to your clipboard (select it all, press ctrl-C)
- log in to Digikey, create a list, and paste the above in.
- wait, wait, wait... then boom you have your parts list with cost and availability
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The following users thank MrPete for this useful post:
dknoll (12-31-2022),
Mikey32 (12-21-2022),
wimvs (12-30-2022)
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Someday, 12:01 PM
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12-20-2022, 07:57 PM
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Site Staff | Video
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Nice contribution.
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The following users thank lordsmurf for this useful post:
MrPete (12-21-2022)
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12-21-2022, 10:23 AM
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Free Member
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Join Date: Dec 2012
Location: Colorado, USA
Posts: 52
Thanked 9 Times in 7 Posts
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BTW, there are TWO key differences between the 5710 and 1980: - 1980 has a tuner
- 5710 has 25 pin RS-232 interface for external control
I don't care about either one, so those are meaningless to me.
BTW, I was briefly excited that the old B&H catalog LordSmurf shared showed some spec differences in the video sections between the two: 5710 with 47dB S/N, 1980 44dB... and they talked about Digital Noise Reduction on the 5710...
...until I dug in. Just marketing stuff.
Both are identical circuitry.
Both have 44dB S/N on VHS, 47dB on S-VHS
Both have DNR in their TBC circuits.
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12-22-2022, 01:54 PM
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Free Member
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Join Date: Nov 2016
Location: Pac Northwest
Posts: 94
Thanked 12 Times in 12 Posts
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Good info and thanks. I was probably at least partly responsible for the last info which was full of errors. IIRC and its been years ago I just ordered a bunch of caps that were the same uf value (digikey) and at least the minimum voltage value.
Sometimes it is hard to to get matching capacitance and voltage ratings in a replacement part. But yes some (many?) errors also probably. Now my real problem is I am just not good at smd compomet replacement. Too small and my eyesight is shite especially depth perception. I under stand the mechanics of it having held a F level NASA certification as well as commercial aerospace soldering certification. Well we all got problems right ha ha. Good Holidays all
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The following users thank bever for this useful post:
MrPete (12-27-2022)
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12-27-2022, 10:02 PM
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Free Member
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Join Date: Dec 2012
Location: Colorado, USA
Posts: 52
Thanked 9 Times in 7 Posts
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Definitely not going to be easy. I hope to use a nice big magnifying glass (ideal: a dissecting microscope  )AND, I get to play with an amazing soldering tool, that produces instantaneous microwave radiation between the tips! Instant heat, instant off.
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12-30-2022, 02:58 PM
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Free Member
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Join Date: Dec 2012
Location: Colorado, USA
Posts: 52
Thanked 9 Times in 7 Posts
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Oops.
I just now received (FedEx delays) my Digikey order. I made a mistake: cell D3 in the current spreadsheet should be for a radial cap but I accidentally chose an SMD.
A more appropriate part, still available and with good ripple/ESR is Nichicon UHE2A560MPD
Updated spreadsheet attached.
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