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philips: 581A made by Philips, Electrolytics

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Forum » Radios and other type of sets (Physics) etc. » MODELS DISPLAYED » philips: 581A made by Philips, Electrolytics
           
Vincent Cappuccitti
 
 
CDN  Articles: 18
Schem.:
Pict.: 42
08.Feb.20 23:25
Reply  |  You aren't logged in. (Guest)   1

I am repairing a Philips radio 581A/15. The radio has been previously worked on and has a hole in the chassis where an electrolytic was once located.

Was this hole for a second 50 mf capacitor or for C3, 25 mf capacitor. Does anyone have this radio that can tell me where C3 (25mf) should be located?

There is presently a single can type electrolytic housing two 50 mf capacitors on top of chassis. Is this original or were there two single 50 mf caps.

Also, also what do the numbers on the old black capacitors represent, pico farads? Most are faded away and difficult to read.

Although my model is a 581A/15 the schematic for the 581A/15 seems to be appropriate. Research implies that this is the same or similar chassis to the Mullard MAS225.

Thank you in advance for your help.

 

Vince Cappuccitti

Gidi Verheijen
Gidi Verheijen
Officer
NL  Articles: 194
Schem.: 1361
Pict.: 1987
09.Feb.20 03:20

Count of Thanks: 1
Reply  |  You aren't logged in. (Guest)   2

Dear Vincent,

Maybe this drawing helps.

Capacitors C1, C2 and C3 are indicated, as well as a few holes in the chassis.

Regards,

Gidi

 

 

Vincent Cappuccitti
 
 
CDN  Articles: 18
Schem.:
Pict.: 42
09.Feb.20 06:20

Count of Thanks: 1
Reply  |  You aren't logged in. (Guest)   3

Thank you Gidi,the drawing does help.

I had traced the wiring to where C3 is located on your drawing and was expecting to find an electrolytic capacitor. Instead there is a black capacitor of a type I am unfamiliar with. Typed on the side of it is L100k from what I could see.

I'll replace C3 with a new cap and continue with my repairs.

Best regards

 

  
rmXorg