KRK 10S Service Manual request

[Kadro]

I need the KRK 10s sub service manual.
I'm having problem with my sub.
I do not know if the RH701 value is correct.

[nickb]

RH701 is 20K at 25C. You would need to remove it from the circuit in order to test it. What are the problem symptoms?

[vintagekiki]

if it is of help

https://www.electro-tech-online.com/threads/repair-a-krk-10s-subwoofer-parts-id.149431/

[nickb]

What exact symptoms do you have?

[Kadro]

RH701 is 20K at 25C. You would need to remove it from the circuit in order to test it. What are the problem symptoms?

Ok, the value is correct.
Now I see VR401 are very bad.
I have the following problem, my sub stopped working after getting very hot, I opened it and changed some capacitors that were bad, I changed the output transistors and their drivers. taking the output signal before the relay, apparently this is correct, without DC, but the protection does not trigger the relay

[dmeek]

I've fixed many KRK speakers and without exception the solution was to remove the black goop. Make sure none of it touches any component or jumper wire.
A heat gun helps loosen it, then scrape it off with a chopstick or whatever.

[nickb]

Ok, the value is correct.
Now I see VR401 are very bad.
I have the following problem, my sub stopped working after getting very hot, I opened it and changed some capacitors that were bad, I changed the output transistors and their drivers. taking the output signal before the relay, apparently this is correct, without DC, but the protection does not trigger the relay

Check the voltages on D701 and D706 anodes - they should be +15V. There are the signals that determine if the relay operates.

PS: Better check the +15V power supply. You should have +15V on both sides of R711 82 ohms.

[Kadro]

D701 and D706 have +15V
The power suplly +15 is ok
R711 have +15V in both side

[Kadro]

Check the voltages on D701 and D706 anodes - they should be +15V. There are the signals that determine if the relay operates.

PS: Better check the +15V power supply. You should have +15V on both sides of R711 82 ohms.

Its all ok
D701 and D706 have +15v in the anodes.
Power supply +15 is ok R711 have +15 in both sides

[Kadro]

I've fixed many KRK speakers and without exception the solution was to remove the black goop. Make sure none of it touches any component or jumper wire.
A heat gun helps loosen it, then scrape it off with a chopstick or whatever.

I do
But does not resolved

[Kadro]

I just see, I have 14mV DC in output before the relay.

[vintagekiki]

KRK schematics

https://music-electronics-forum.com/showthread.php?t=39365

https://music-electronics-forum.com/showthread.php?t=41162

https://music-electronics-forum.com/attachment.php?attachmentid=33751&d=1430277257
KRK RP6G2

https://music-electronics-forum.com/attachment.php?attachmentid=33753&d=1430283318
KRK RP5G2-A

https://music-electronics-forum.com/attachment.php?attachmentid=37246&d=1452554056
KRK RP10S

https://music-electronics-forum.com/attachment.php?attachmentid=37245&d=1452554031
KRK RP8G2

https://music-electronics-forum.com/attachment.php?attachmentid=37244&d=1452553770
KRK RP8V6

http://web.archive.org/web/20100921042634/http://www.krksys.com/documents/v-series_v-6schematicrev-10.pdf
KRK V6

http://web.archive.org/web/20161020165041/http://www.krksys.com/documents/V-series_V-8SchematicRev-1.pdf
KRK V8

http://web.archive.org/web/20100921042724/http://www.krksys.com/documents/V-series_V-88SchematicRev-4.pdf
KRK V88

[Kadro]

[QUOTE=vintagekiki;517348]https://music-electronics-forum.com/showthread.php?t=39365

https://music-electronics-forum.com/showthread.php?t=41162

https://music-electronics-forum.com/attachment.php?attachmentid=33751&d=1430277257
KRK RP6G2

https://music-electronics-forum.com/attachment.php?attachmentid=33753&d=1430283318
KRK RP5G2-A

https://music-electronics-forum.com/attachment.php?attachmentid=37246&d=1452554056
KRK RP10S

https://music-electronics-forum.com/attachment.php?attachmentid=37245&d=1452554031
KRK RP8G2

https://music-electronics-forum.com/attachment.php?attachmentid=37244&d=1452553770
KRK RP8V6

http://web.archive.org/web/20100921042634/http://www.krksys.com/documents/v-series_v-6schematicrev-10.pdf
KRK V6

http://web.archive.org/web/20161020165041/http://www.krksys.com/documents/V-series_V-8SchematicRev-1.pdf
KRK V8

http://web.archive.org/web/20100921042724/http://www.krksys.com/documents/V-series_V-88SchematicRev-4.pdf
KRK V88[/QUOTE

I love Youuuuuu.
Thank you thank you thank you

[clintronics]

ITS THE BLACK GOOP. The new replacement modules use a white glue and they stopped dumping over parts for no reason.

[J M Fahey]

In any case, 14mV offset is not enough to trigger any speaker protection.