Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

RCA WV-98c
#1

I have a wv98c and it looks like the meter is roached. Needle wont move. I applied a small voltage thru a pot and resistor and it wont move. Can the movement be taken apart?


Attached Files Image(s)
   
#2

Your power supply's ammeter is, obviously, coarse and might not see a small current.
Put an ammeter in series, and see if any current at all flows. If not, there is an open somewhere, possibly inside the meter.
Many old ones could be taken apart, but I am not familiar with this one. See if tehre are screws holding things together.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#3

I balanced the movement. Micro surgery. Like working on a watch. While iam in the machine should i replace these brown caps?

https://www.dropbox.com/scl/fi/1lrg7d1dz...g39h7&dl=0


Attached Files Image(s)
   
#4

Think yes.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#5

To fix the movement properly you need to glue the magnet to the bracket. They used junkie glue from the factory.


Attached Files Image(s)
   
#6

So i put it back together, replaced the only electrolytic cap, the ohms feature works but on DC + volts, it pegs the meter to the right. Any thoughts?


Attached Files Image(s)
   
.pdf wv98c_sch.pdf Size: 153.27 KB  Downloads: 19
#7

Check the schematic.
And the idea is pretty simple: if you peg it to the right, you put too much current through it.
Work from there.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#8

I will check out resistors R23, R27 and R28.
#9

I only see one R23 resistor. The schematic shows two.


Attached Files Image(s)
   
#10

Can you put PDF of the sch here, or the link to it?

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#11

Here is the schematic


Attached Files Image(s)
   
#12

Are there any paper capacitors, or only disc ceramic ones?

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#13

Disc and polys.
#14

Can you highlight the circuit that is set by switches and leads when it measures DC volts?

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#15

Thats the hard part and what i need. .5 thru 15vdc i cant get the pot to zero the meter. Higher voltages are ok




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 38-2 Automatic Tuning
I received my new 38-2 dial. I'm a little disappointed. As you can see in the picture the blues have a white shadow. The...dconant — 11:13 AM
Philco 38-2 Low Volume
I have been playing my 38-2 for a while now and it is doing very well. I did have to replace the 6A8 (osc) as it develop...dconant — 11:03 AM
Philco Speaker Spider
Hello, Does anyone with a 3 D printer make the spiders for those old Philco speakers? That might be a good idea for some...dconant — 09:41 AM
Philco 16B Parts
Hello, I'm looking to buy a 16B but I'm not so sure of what I am looking at. First as seen from the picture it looks lik...dconant — 09:17 AM
Looking for verification of correct schematic.
Klondike98, Thank you. I'll double check that SN and get back to you. GarySP, Thank you for the schematic.RossH — 12:13 AM
Looking for verification of correct schematic.
I think you have the correct take on your set. Ron's annotated early schematics that note the below B22000 serial numbe...klondike98 — 12:04 AM
Looking for verification of correct schematic.
Hello Ross. The Philco Radio Library located at the bottom of the page has the schematic with the tube count you have. ...GarySP — 10:48 PM
HiFi (Chifi) tube amp build - but my own design.
Tim It's be interesting if you put your schematic here. Who knows, you could get some advice from a few folks here. ...morzh — 10:01 PM
Philco 42-390, code 121 speaker
Thanks for that information. It would appear from the output transformer parts list that the transformer that was origi...Stevelog — 07:21 PM
Looking for verification of correct schematic.
I would like to verify that my thoughts are correct regarding my Model 70 and its appropriate schematic. My chassis inf...RossH — 06:26 PM

[-]
Who's Online
There are currently 1226 online users. [Complete List]
» 1 Member(s) | 1225 Guest(s)
Avatar

>