[TechAssist] Re: Fusible resistors
- From: Bil Green <tv.vcrrepair@xxxxxxxxxxx>
- To: J Silverman <techassist@xxxxxxxxxxxxx>
- Date: Fri, 8 Oct 2004 15:08:57 -0700
But there really is a relationship between fuseable and flameproof.
They both contain a very thin film of metal or carbon which opens
when overheated.
I realize that some film resistors with the same wattage ratings
may open at a different temperature, but I feel a lot better using
a film resistor in place of a fuseable than using one with a higher
wattage rating.
Yes, in extremely rare cases this practice could cause a house to
catch fire, but I suppose it's about as likely as getting hit by a
bus. I'm very honest with my customers, and try to get the job done
without having to special order a 50 cent part too often.
Bil Green
PC 1000
Mammoth Lakes, CA 93546
760-924-1000
Friday, October 8, 2004, 12:47:55 PM, you wrote:
JS> There is no relationship between fusible and flameproof. They have different
JS> applications. Fusible has been selected to protect some circuit from further
JS> damage. Flameproof is to prevent smoke and fire when damage occurs.
JS> Jerry Silverman
JS> Greentron Inc
JS> 4 Newland Ave
JS> Greenville SC 29609
JS> Fax/Phone 864 232 3889
JS> mail to: greentron@xxxxxxx
JS> ----- Original Message -----
JS> From: "Paul" <dntwntv@xxxxxxxxxxxxx>
JS> To: <techassist@xxxxxxxxxxxxx>
JS> Sent: Friday, October 08, 2004 2:06 PM
JS> Subject: [TechAssist] Re: Fusible resistors
>> Thats interesting, because I am working on a Samsung that came in with a
JS> vertical problem per the customer. Didn't show up in the shop till I tapped
JS> the board. I resoldred all the i/c pins and other relative components. Still
JS> no deflection. Hit the area with freeze and got partial deflection
JS> momentarily while a peaking coil smoked. I replaced the i/c the coil a
JS> shorted zener and a lytic cap. The 5.6 ohm fusible opened also which I
JS> didn't see till I fired it up again and had fold over. I replaced with a
JS> flame proof. It smoked and opened up immediately. Found another shorted
JS> zener. Thus the reason for the question. A fusible didn't seem to work any
JS> better than a flame proof, at least in this case. Some suppliers use the
JS> term fusible to mean flame proof.
>> Paul
>> J Silverman <greentron@xxxxxxx> wrote:
>> No. A flame proof resistor is made of materials that wont burn or smoke
>> excessively. That doesnt mean that it wont light up like a light bulb
JS> while
>> the circuit it is supposed to protect vaporizes and the resistor survives.
JS> A
>> fusable resistor is supposed to protect something by interrupting the
>> current.
>> Jerry Silverman
>> Greentron Inc
>> 4 Newland Ave
>> Greenville SC 29609
>> Fax/Phone 864 232 3889
>> mail to: greentron@xxxxxxx
>> ----- Original Message -----
>> From: "Paul"
>> To:
>> Sent: Thursday, October 07, 2004 9:57 PM
>> Subject: [TechAssist] Fusible resistors
>>
>>
>> > Is a flame proof resistor a safe sub for a fusible resistor of the same
>> value?
>> > If not why not?
>> > Paul
>> >
>> > Paul ,B
>> > Central TV&Video
>> > 911W Grand Ave
>> > Grover Beach Ca.
>> > (805)481-8084
>> >
>> >
>>
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>> Paul ,B
>> Central TV&Video
>> 911W Grand Ave
>> Grover Beach Ca.
>> (805)481-8084
>>
>>
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