Rotel RHB-10 amp not firing up anymore; protection light/cicuit not engaging

Wiring covering wears out n circuits also draw morejuice w age. Taketank off n inspect harness bfor fire or fault. Library has shopbooks

Yes it is repairable, but if you do not have any experience in the repair of microwave ovens do not engage in their repairs because it is one of the most dangerous household appliances and the consequences can be disastrous. If light and turntable works than low voltage circuit (220V or 110V) works well. In this case the problem is in a high voltage (HV) circuit which is made up of the magnetron, HV diode (rectifier), HV capacitor and HV fuse or protect diode. Failure is in any of these components in "HV circuit" or in the main board. If light and turntable does not work than fault could be in power supply elements like: power supply cord, transformer, power board, fuse (glass or ceramic, ussualy 8A, 10A or 12A) on power board.

Dado

You should never increase the size of the fuse in anything because you can potentially cause a fire. Are you sure the original fuse was 10 amps? It sounds like if it is for a starter the fuse size should be substantially larger. Check the fuse panel just to make sure that the original was only 10 amps

YOU ARE NOT RIGHT IT SHOULD GIVE AT LAEST A LOW VOLUME SOUND WITH A LOT OF DISTORSION AND A CRACKING NOISE IF DOES I GUESS THAT YOU HAD THIS AMP IN A PLACE WITH A LOT OF HUMIDITY AND YOU HAVEN'T WORK IT FOR SOME TIME IF I AM RIGHT PUT YOUR AMP IN THE SUN AND WORK IT FOR 10 MIN WITH A 5 MIN BREAK LET ME KNOW THE RESULTS

Fuse #15 "BACK UP/ACC" (40 Amp) in the Underhood Fuse/Relay Box
protects the circuits leading to Fuse #7 "BACKUP" (7.5 Amp) in the Underhood
Fuse/Relay Box and also fuses (#5 "RADIO" (10 Amp), #6 "INTR LIGHT" (7.5 Amp),
#7 "BACK UP" (7.5 Amp), #8 "not used", and #9 "FR ACC SOCKET (10 Amp)
in the Driver's Fuse/Relay Box.
To further narrow down the source of your draw, pull each of these fuses one at a time.
No, that was not a "typo" There are 2 fuses marked "BACK UP" and are both 7.5 Amp and one is
in the Underhood Fuse/Relay Box and the other is in the Driver's Fuse/Relay Box. (I checked this 3 times just to make sure.)

When you refer to the "sound fuses" are you referring to the speaker protection fuses or the power supply fuses?

Dan

Since it is a Rotel, it is a good unit and worth fixing. At this point, you need to take it to a good repair shop and let a qualified tech look at it. There are no user serviceable parts inside and if you go poking around in there, you WILL make the problem worse. Rotels' are nice units and represent a good value in stereo gear. Take it to a reputable repair shop that repairs Rotel under warranty. If thats not available to you, then a good repair shop should be able to get you going. Good luck...Rob

if AMP turns on and no sound , check the inernal fuses that protect the output from overload , in most cases this fuses act like a cicuit breaker , they set back on again in a few seconds. hope this helps

the fuse is in the black box tied in to the main power wire,the yellow one. open it up and the fuse is inside. if this has been cut off and your other fuses are fine, the unit did not have proper protection and probably fried from a surge or short cicuit . the fuse on the unit should be a 10 amp mini and no higher.

have you checked Radio Shack? they have a lot of cicuit board stuff for soldering