orion hcca 250r schematics

ernie cosillos · 19th October 2010, 07:25 PM

i have this orion hcca 250r that has about 12 fried transistors. i got this amp off a friend as a project and was hoping anyone out there can get me a schematic i need the transistor numbers and also if anyone has a 250r for parts i'd be willing to buy it off you. i need the braces that hold the transistors against the heatsink. i'd appreciate any help, thanks

Perry Babin · 19th October 2010, 08:20 PM

Are the transistors missing?

ernie cosillos · 19th October 2010, 08:48 PM

yeah the transistors are in fact missing, thankyou for responding. i'm really into old school amplifiers and i'd really hate to see this one go to waste

Perry Babin · 19th October 2010, 10:52 PM

Which ones are missing?

ernie cosillos · 20th October 2010, 04:47 PM

hey there! theres about eight from one side and four from the other. can't give you any specifics as to wich exact ones are missing, i'm kinda new at this stuff so i apologize for the lack of knowledge. all i can tell you is that they aretowards the center of the amp.

Perry Babin · 20th October 2010, 05:23 PM

There's a circuit board designation (Qxx) next to each transistor.

ernie cosillos · 20th October 2010, 05:45 PM

i will look up the designated numbers and will have them for you tomorrow regarding the transistor placement, and also in your opinion, is this model amp worth the trouble considering all thats wrong with it is the transistors, basically what happened to the amp was that the power wires accidently touched to the ground wire

Perry Babin · 20th October 2010, 06:17 PM

The lack of clamps would be the biggest concern for this amp. It's likely that you won't be able to find any. You may be able to make clamps for the transistors but to do it properly may be very time consuming.

ernie cosillos · 20th October 2010, 06:53 PM

YES THE LACK OF CLAMPS IS A MAJOR CONCERN OF MINE BUT SINCE I HAVE NO WAY OF OBTAINING THE ORIGINALS I'M FORCED TO CONSTRUCT MY OWN. ONCE I HAVE THE TRANSISTOR INFO THAT YOU WERE ASKING ABOUT IS IT POSSIBLE YOU WOULD HAVE THE NUMBERS?

Perry Babin · 20th October 2010, 06:57 PM

Yes.

How thick is the metal just behind the transistors (look at the end of the heatsink)?

19th October 2010, 07:25 PM	#1
ernie cosillos diyAudio Member Join Date: Oct 2010	orion hcca 250r schematics i have this orion hcca 250r that has about 12 fried transistors. i got this amp off a friend as a project and was hoping anyone out there can get me a schematic i need the transistor numbers and also if anyone has a 250r for parts i'd be willing to buy it off you. i need the braces that hold the transistors against the heatsink. i'd appreciate any help, thanks

19th October 2010, 08:20 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Are the transistors missing? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

19th October 2010, 08:48 PM	#3
ernie cosillos diyAudio Member Join Date: Oct 2010	250r schematics yeah the transistors are in fact missing, thankyou for responding. i'm really into old school amplifiers and i'd really hate to see this one go to waste

19th October 2010, 10:52 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Which ones are missing? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

20th October 2010, 04:47 PM	#5
ernie cosillos diyAudio Member Join Date: Oct 2010	250r schematics hey there! theres about eight from one side and four from the other. can't give you any specifics as to wich exact ones are missing, i'm kinda new at this stuff so i apologize for the lack of knowledge. all i can tell you is that they aretowards the center of the amp.


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20th October 2010, 05:23 PM	#6
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	There's a circuit board designation (Qxx) next to each transistor. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

20th October 2010, 05:45 PM	#7
ernie cosillos diyAudio Member Join Date: Oct 2010	i will look up the designated numbers and will have them for you tomorrow regarding the transistor placement, and also in your opinion, is this model amp worth the trouble considering all thats wrong with it is the transistors, basically what happened to the amp was that the power wires accidently touched to the ground wire

20th October 2010, 06:17 PM	#8
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The lack of clamps would be the biggest concern for this amp. It's likely that you won't be able to find any. You may be able to make clamps for the transistors but to do it properly may be very time consuming. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

20th October 2010, 06:53 PM	#9
ernie cosillos diyAudio Member Join Date: Oct 2010	YES THE LACK OF CLAMPS IS A MAJOR CONCERN OF MINE BUT SINCE I HAVE NO WAY OF OBTAINING THE ORIGINALS I'M FORCED TO CONSTRUCT MY OWN. ONCE I HAVE THE TRANSISTOR INFO THAT YOU WERE ASKING ABOUT IS IT POSSIBLE YOU WOULD HAVE THE NUMBERS?

20th October 2010, 06:57 PM	#10
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Yes. How thick is the metal just behind the transistors (look at the end of the heatsink)? __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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