CR-2010 voltage regalator

[avionic]

Not really.

If I measure the voltage where I circled in yellow, it should read DC +37v(pin 1 & 2) and DC -37v(pin 5 & 6), right?

View attachment 791689

Stand by.

 

[avionic]

Pins 1 and 2 --- +37vdc and pins 5 and 6 --- -37vdc . Correct.

 

[kwatch]

Pins 1 and 2 --- +37vdc and pins 5 and 6 --- -37vdc . Correct.

1 & 2 = 11.7mv ( definitely something wrong!)
5 & 6 = -48v

 

[avionic]

1 & 2 = 11.7mv ( definitely something wrong!)
5 & 6 = -48v

Ahh. Yep sure is.

 

[avionic]

You have a problem on the e-cap board.
1. bad solder connections on R801 or FR801. or
2.crack copper trace on the circuit board. or
3. bad solder connection on that circled connector.or
4. One of those resistors is open (R801 or FR801) and the resistance you were reading in circuit was misleading.

 

[kwatch]

You have a problem on the e-cap board.
1. bad solder connections on R801 or FR801. or
2.crack copper trace on the circuit board. or
3. bad solder connection on that circled connector.or
4. One of those resistors is open (R801 or FR801) and the resistance you were reading in circuit was misleading.

Do you have the replacement part# for R801 and FR801?

 

[avionic]

I can get one shortly..

 

[avionic]

I'll bet if you do the CR-2020 service bulletin to the CR-1020 this will all clear up.
http://sportsbil.com/yamaha/cr-2020-servbull3.pdf

 

[kwatch]

I unsolder the FR801-22Ω and measured the resistance. My multimeter could not read any resistance. I think the value is too low. Is this mean it is open?

I'm not sure what happened. Receiver was working before I disassembled the power supply and E cap board.

 

[avionic]

http://www.mouser.com/ProductDetail/Ohmite/93J33RE/?qs=sGAEpiMZZMtbXrIkmrvidNoLDMO5CJt8WrVD/BNh/hc=

http://www.mouser.com/ProductDetail...GAEpiMZZMtbXrIkmrvidIY3c6LmoosbW8%2bArvubKUE=

 

[avionic]

Is this mean it is open?

BINGO give the man a cigar.

 

[kwatch]

http://www.mouser.com/ProductDetail/Ohmite/93J33RE/?qs=sGAEpiMZZMtbXrIkmrvidNoLDMO5CJt8WrVD/BNh/hc=

This is for R801. I also need par# for FR801(22 Ohms). Thank you for your help.

 

[avionic]

Just posted it in the same post.

 

[kwatch]

Just posted it in the same post.

I'll order the part and I'll keep you posted.

 

[avionic]

I'd do FR801 & 802 as well as R801 & 802...

 

[kwatch]

I'd do FR801 & 802 as well as R801 & 802...

CR-2020 bulletin says "22ohm 150mA fuse resistors".

This one does not say "fuse resistor".
http://www.mouser.com/ProductDetail...GAEpiMZZMtbXrIkmrvidIY3c6LmoosbW8%2bArvubKUE=

 

[avionic]

Read the service bulletin. It says to replace with Ohmite #4374 and #4369 . Which equal to. 3.25 watt , 22 and 33Ω , wirewound , with a flameproof vitreos-enamel coating.Its kinda "slim pickens" for 3 1/4 watt resistors.

 

[kwatch]

Read the service bulletin. It says to replace with Ohmite #4374 and #4369 . Which equal to. 3.25 watt , 22 and 33Ω , wirewound , with a flameproof vitreos-enamel coating.Its kinda "slim pickens" for 3 1/4 watt resistors.

I received the parts from Mouser today and replaced two 22 ohm fuse resistors. I'll replace two 33 ohm resistors later. It's working great now! Thank you.

 

[avionic]

Super..

 

[Nashou66]

Yay !!!!!!